The 6 Best Smartwatches of 2026 (Your Phone Has Already Chosen One)

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Our quick picks

Ranked by what each one is best at, not by a score we made up. Ratings are what the product showed on Amazon when we last checked — how we rank.

Below: why each one made the list, the numbers worth comparing, and what is wrong with it.

Your phone has already chosen your smartwatch, and pretending otherwise is the most expensive mistake in this category.

An Apple Watch does not work with an Android phone. Not partially, not with an app — at all. A Google Pixel Watch and a Samsung Galaxy Watch require Android, and the Galaxy Watch reserves some of its health features for Samsung phones specifically. Only Garmin and Amazfit really work with both platforms. So before comparing displays or heart rate sensors, establish what will actually pair with the phone in your pocket, because that eliminates most of the market immediately.

The second thing to settle early is battery life, and the reason is not convenience. It is that a watch you charge overnight cannot track your sleep, and sleep tracking is the feature most buyers say they want. Apple, Google and Samsung watches run roughly a day to two days and expect a nightly charge. Garmin typically runs one to two weeks, and Amazfit two to three. If sleep data matters to you, that difference decides the purchase, and no amount of smartwatch cleverness compensates for a dead battery at bedtime.

Below are six watches across both ecosystems and both approaches. Before them, an honest section on what the health sensors can and cannot tell you, because the marketing in this area has got well ahead of the measurement. If you are kitting out for exercise, our guide to the best wireless earbuds is the natural companion.

Quick picks

• Best for Android: Google Pixel Watch 5 — the highest-rated watch here, with Google’s health platform and a design that looks like a watch rather than a gadget.
• Best for iPhone: Apple Watch Series 12 — the deepest integration with any phone of any watch, and the most complete safety feature set.
• Best for health and sleep tracking: Garmin Venu 3 — body battery, sleep coaching and multi-day battery life, and it works with both iPhone and Android.
• Best for Samsung phone owners: Samsung Galaxy Watch 8 — advanced sleep tracking and running coaching that works best inside Samsung’s own ecosystem.
• Best battery life and best value: Amazfit Bip Max — a large AMOLED display, GPS and around twenty days between charges.
• Best simple fitness band: Samsung Galaxy Fit 3 — two weeks of battery, swim-ready, and none of the complexity you may not want.

Read this first: what the health sensors actually measure

This section exists because the gap between what these devices measure and what the marketing implies is wider here than in any other consumer category. None of what follows is medical advice. If you have a symptom or a concern about your heart, your sleep or anything else, that is a conversation with a doctor, and a reading from your wrist is not a reason to have it or to skip it.

A smartwatch is a wellness device, not a medical instrument

• Heart rate is estimated optically, by shining light into the skin and measuring how the reflection changes as blood pulses. It is reasonably good at rest and during steady effort, and it degrades noticeably during intervals, weight training, rowing and anything with a lot of wrist movement, where it can lag or latch onto the wrong rhythm. Darker skin tones, tattoos over the sensor, cold hands and a loose strap all reduce accuracy.
• Sleep stages are inferred from movement and heart rate variability, not measured. A sleep laboratory uses brain activity to stage sleep; a watch is guessing from proxies. Total sleep time and wake episodes are reasonably useful; the breakdown into light, deep and REM should be treated as a rough pattern rather than a number to act on.
• Blood oxygen (SpO2) on a wrist is not equivalent to a medical pulse oximeter, and the trend over time is more meaningful than any single reading. Do not use it to assess whether you are unwell.
• Stress and readiness scores are heart rate variability calculations dressed in friendly language. They can be actually useful for spotting patterns — a run of poor recovery scores often does correspond to being run down — and they are not measurements of a physiological state with a defined threshold.
• ECG and irregular rhythm notifications are the exception worth taking seriously: on several watches these features have regulatory clearance in some markets, and they have prompted real diagnoses. They are still screening tools that produce false positives and false negatives, and a notification means see a doctor, not diagnose yourself.
• Step counts are accurate enough to be useful and wrong enough that comparing your watch to someone else’s is meaningless.

Two ways people are misled by their own watch

The first is false reassurance. A watch that reports a normal heart rate and a good sleep score while you feel unwell is not evidence that you are fine, and that has caused people to delay seeking help. Symptoms beat sensors, every time.

The second is false alarm and the anxiety that follows. Continuous monitoring produces a great deal of normal variation, and looking at it constantly finds patterns that are not there. If tracking is making you anxious rather than informed, turning off the notifications you do not need is a reasonable response, and so is taking the watch off at night for a while. Several studies have noted this effect and it is worth knowing about before you start.

Getting readings that are worth having

• Wear it snug, and above the wrist bone — about a finger’s width up your arm from the bony lump. A loose watch that slides around produces poor optical readings.
• Tighten it slightly for exercise and loosen it afterwards. Most bad workout heart rate data is a fit problem.
• Keep the sensor window clean and dry. Sweat, sunscreen and grime all interfere.
• For serious training, use a chest strap. An electrical chest strap measures the heart’s actual signal rather than inferring it from blood flow, and it is dramatically more accurate during intervals and lifting. Most watches pair with one, and a strap costs a small fraction of the watch.
• Tattoos over the sensor can prevent optical readings entirely. Wear the watch on the other wrist.
• Do not draw conclusions from single readings. Trends over weeks are where the value is.

Our shortlisting process

We built this list from current Amazon listings, manufacturer specifications and the recurring patterns in verified buyer feedback. We have not worn all six simultaneously against a chest strap and a sleep laboratory, and we are not going to imply we validated their sensors. What we did was assess each on the things that determine whether it is the right watch for a given person: phone compatibility, battery life against the features it offers, GPS capability, water resistance, whether useful features sit behind a subscription, and how well the ecosystem behind it works.

We weighted heavily against subscriptions that paywall basic insight, against watches whose battery claims collapse with the always-on display enabled, and against recurring reports of software problems after updates. Every pick holds a customer rating of 4.3 stars or better.

One note on ratings in this category: flagship watches often launch with low ratings that recover as software matures, and several current-generation listings sit at 4.0 to 4.1 for that reason, including some variants of watches we do recommend. Where a specific configuration is rated much lower than its siblings, that is usually about a particular variant or launch software rather than the design — so check the exact model and size you are adding to the basket. Samsung also appears twice here, once for a full smartwatch and once for a simple band, because those are truly different products for different people.

What to know before you buy

Phone compatibility, stated plainly

• Apple Watch: iPhone only. There is no Android support of any kind, and there never has been. If you have an Android phone, the Apple Watch is not an option regardless of how much you like it.
• Google Pixel Watch: Android only, and best with a Pixel phone though it works broadly across Android.
• Samsung Galaxy Watch: Android only, and some health and coaching features require a Samsung phone specifically. On a non-Samsung Android phone it works and you lose some of what you paid for.
• Garmin: both platforms, with essentially full functionality either way. This is the reason Garmin is popular with people who switch phones or live in mixed households.
• Amazfit: both platforms. Same advantage, at a lower price.
• If you might switch phone platforms in the next three years, buy Garmin or Amazfit. A watch is a three-to-five-year purchase and an ecosystem-locked one becomes a paperweight the day you change phones.

Battery life is a feature trade, not a quality difference

Watches with bright always-on displays, cellular radios, app stores and continuous sensing use a great deal of power, and watches that last two weeks achieve it by doing less. Neither approach is better; they suit different people.

• One to two days — Apple, Google, Samsung. Full app ecosystems, best notifications and calls, best emergency features. You charge it daily, usually while showering or at a desk, and sleep tracking requires finding another window to charge.
• One to two weeks — Garmin. Fewer apps and a less slick interface, far better sleep and recovery data simply because the watch is on your wrist all night every night.
• Two to three weeks — Amazfit and simple bands. Fewest smart features, least thinking about charging.
• Always-on display roughly halves whatever figure is quoted, on every watch. Manufacturer battery claims assume it is off and GPS is unused.
• Cellular halves it again when actually used without a phone nearby.

GPS: single band, multi-band, and why it matters

If you run or cycle and care about distance and pace, GPS quality is the specification that decides whether your data is any good. Single-band GPS drifts in cities, under tree cover and in valleys, producing routes that cut corners and paces that jump around. Multi-band or dual-frequency receivers use two satellite frequencies and are markedly better in exactly those conditions.

If you run on open roads and want a rough distance, single band is fine. If you run in a city with tall buildings, on wooded trails, or you care about accurate splits, look for multi-band and expect to pay for it. Also check whether the watch has GPS at all — some cheaper bands rely on your phone’s GPS, which means carrying the phone to record a run.

Water resistance, and what the numbers mean

• 5ATM is the useful standard: it means the watch handles swimming and showering. Most current smartwatches have it.
• IP68 covers dust and immersion in still water, and it is not a swimming rating on its own — a watch with IP68 and no ATM figure is splash-resistant rather than swim-ready.
• Neither rating covers scuba diving, high-pressure jets or hot tubs, where heat and pressure both exceed what the seals are tested for.
• Rinse it after swimming, particularly in salt water or chlorine, and dry the sensor area. Salt residue degrades seals and skin contacts.
• Leather and fabric straps are not swim gear even when the watch is. Silicone or fluoroelastomer for water.

Subscriptions and what they lock away

This varies enormously and it is worth checking before you buy rather than discovering it in the app. Some ecosystems give you all your data and all the analysis for free once you own the device. Others place sleep insight, readiness scoring, trend history or guided programs behind a monthly fee, and at least one popular fitness tracker is sold as a membership where the hardware is bundled with an ongoing subscription rather than bought outright.

None of that is inherently wrong, and it changes the total cost substantially over three years. Look for what the free tier includes, and specifically whether your own historical data remains visible if you stop paying.

The details that matter over three years

• Battery replacement. No smartwatch has a user-replaceable battery, and capacity falls over a few hundred charge cycles. A watch you charge nightly ages faster than one you charge every two weeks. Check whether the manufacturer offers a battery service at all.
• Strap standard. A watch using standard 20mm or 22mm quick-release pins gives you every strap ever made; a proprietary fitting limits you to the manufacturer’s range at the manufacturer’s prices.
• Screen durability. Sapphire crystal resists scratches far better than glass, and it is usually reserved for higher-end models. A raised bezel protects the screen edge, which is where knocks land.
• Case size. A 45 or 46mm case is large on a small wrist and uncomfortable to sleep in. Measure your wrist and compare against the case dimensions rather than guessing.
• Fall detection and emergency SOS are valuable for older users, people who exercise alone, and anyone with a health condition. They generally need a paired phone nearby or a cellular model to call for help.
• Software support length. Ask how long the manufacturer has supported previous models. A watch that stops receiving updates in two years is a two-year watch.

The 6 best smartwatches

1. Google Pixel Watch 5 — best for Android

At 4.7 stars this is the best-rated watch on this page, and the reasons are a combination of hardware and software maturity. Google now owns Fitbit and has folded that health platform into the Pixel Watch, which means the sleep and activity analysis behind it comes from a company that spent a decade doing nothing else — and unlike the early Pixel Watches, the current generation has the battery life and the sensor set to make use of it.

It also looks like a watch. The domed circular design is handsome in a category full of rectangles and sports bezels, which matters if you intend to wear it with anything other than running kit. And as the Google-native option it gets the tightest integration with Android notifications, Google Assistant, Wallet and Maps of any Android watch. Customer rating is 4.7 stars.

Why it made the list: it is the Android watch that is both the best-looking and the best-rated, with a health platform behind it that predates the hardware. For anyone on Android who is not specifically a Samsung phone owner or a serious athlete, this is the one.

Where it falls short: it is Android only, so iPhone users should stop reading here. Battery life is in the one-to-two-day bracket, and with the always-on display enabled you are charging daily — which makes sleep tracking a scheduling exercise rather than an automatic thing. Check what sits behind a Fitbit Premium subscription in the version and region you are buying, because the split between free and paid insight has moved around. And a 45mm case is large on a small wrist, particularly to sleep in; the smaller size exists for a reason.

Who it is for: Android users, anyone who wants a smartwatch that looks like a watch, and anyone who values Fitbit-derived health analysis.

See the Google Pixel Watch 5 on Amazon →

2. Apple Watch Series 12 — best for iPhone

If you have an iPhone, this is the watch, and the case is not really about sensors. It is that the integration is deeper than anything any other manufacturer can achieve on any platform: replying to messages properly, unlocking your Mac, Apple Pay, handing off calls, finding your phone, and an enormous third-party app ecosystem. No other watch is as useful as a watch.

The health and safety feature set is also the most complete available. Apple has built out heart rhythm notifications, high and low heart rate alerts, fall detection, crash detection and emergency SOS, and those have a real record of getting help to people. The current generation adds readiness assessment and continues to improve the heart rate sensor. The GPS-only 42mm version is rated 4.5 stars; note that other size and cellular configurations of the same watch currently sit lower, which is typical of launch-period ratings.

Why it made the list: on iPhone it has no real competitor, and the safety features are the most valuable thing in this whole category — particularly for older users and for anyone who exercises alone. Fall detection and emergency SOS are the features you hope never to use and are glad to have.

What owners complain about: iPhone only, with no Android support whatsoever — and if you ever switch phones, the watch is finished. Battery life is the shortest bracket here, so nightly charging is the assumption and sleep tracking requires a charging routine. Ratings vary noticeably between sizes and cellular configurations, so check the specific variant. Cellular models add a monthly carrier charge, which many buyers never use. And Apple’s strap fitting is proprietary, so you are buying straps from Apple’s range and its imitators rather than any watch strap in the world.

Who it is for: iPhone users, anyone who wants the most capable smartwatch as a watch, and anyone who values fall detection and emergency features.

See the Apple Watch Series 12 on Amazon →

3. Garmin Venu 3 — best for health and sleep tracking

This is the watch for people who actually want the data rather than the notifications, and the reason it works is boring: the battery lasts long enough that the watch is on your wrist all night, every night, without you having to think about it. Sleep tracking is only useful if it happens continuously, and a watch that needs charging every evening does not track sleep continuously no matter what its sensors can do.

Garmin’s analysis is also the most developed here. Body Battery combines heart rate variability, activity and sleep into a running estimate of how much you have left in the tank, which sounds like a gimmick and turns out to be the metric people find most useful day to day. Sleep scoring comes with coaching that suggests what to change rather than just showing a graph. It has a bright AMOLED display, and it works fully with both iPhone and Android. Customer rating is 4.4 stars.

Why it made the list: multi-day battery plus the best recovery analysis in the category plus genuine cross-platform support is a combination nothing else here offers. It is also the right answer for anyone who might change phone platform, because it does not care which phone you own.

The downside: it is not as slick a smartwatch as the Apple, Google or Samsung options — the interface is more utilitarian, the app selection is thin, and replying to messages is basic. Garmin’s own app is powerful and dense rather than friendly. Body Battery and sleep scores are proprietary calculations rather than measurements, so treat them as useful patterns rather than facts. At 45mm the Venu 3 is a large watch; the smaller 41mm version exists for narrower wrists and is easier to sleep in. And Garmin’s pricing is closer to Apple’s than its feature list as a smartwatch suggests.

Who it is for: anyone who wants real sleep and recovery data, runners and cyclists, people who switch between iPhone and Android, and anyone who hates charging things.

See the Garmin Venu 3 on Amazon →

4. Samsung Galaxy Watch 8 — best for Samsung phone owners

If your phone is a Samsung Galaxy, this is the watch that gets the most out of it. Samsung reserves some of its health and coaching features for its own phones, and the running coach in particular — which builds progressive training from your own data — is one of the better implementations of that idea on any watch. Sleep tracking is advanced, with sleep apnoea detection features that have regulatory clearance in some markets.

It also has the hardware advantage of Samsung’s bioelectrical impedance sensor, which estimates body composition from your wrist — an unusual feature, and one to read as a rough trend rather than a body scan. As a Wear OS watch it has a proper app ecosystem, and integration with Samsung phones for calls, messages and Samsung Pay is seamless. Customer rating is 4.4 stars.

Why it made the list: for a Samsung phone owner it does things no other watch does, and the sleep features are among the most developed available. It is also a good general Wear OS watch even on other Android phones, with the caveat below.

What you give up: on a non-Samsung Android phone you lose some features and are paying for capability you cannot use — the Pixel Watch is the better choice there. It does not work with iPhone. Battery life is in the one-to-two-day bracket, so the same sleep-tracking charging problem applies as with Apple and Google. Body composition from a wrist device is an estimate with meaningful error and should not be used to make decisions; the trend is the useful part. And Samsung’s model naming across sizes, Bluetooth and LTE variants is confusing, so check exactly which you are ordering.

Who it is for: Samsung Galaxy phone owners, anyone who wants advanced sleep features, and runners who want built-in coaching.

See the Samsung Galaxy Watch 8 on Amazon →

5. Amazfit Bip Max — best battery life and best value

Twenty days between charges changes what a watch is for. You stop thinking about charging entirely, it is on your wrist every night so the sleep data is continuous, and you can take it on a two-week holiday without the cable. That is the single biggest practical difference between this and the flagship watches, and it costs a fraction of what they do.

It is not a stripped-down band either: a large 2.07-inch AMOLED display, built-in GPS so you can record a run without carrying your phone, 4GB of onboard storage for music, and compatibility with both iOS and Android. Customer rating is 4.4 stars.

Why it made the list: it delivers the two things most people actually use — notifications and continuous health tracking — for a small fraction of flagship money, with battery life none of them approach. For a first smartwatch, a second watch for holidays, or anyone who resents charging another device, it is the sensible purchase and the flagship is the indulgence.

The part that annoys people: the smart features are basic compared with Wear OS or watchOS — you see notifications rather than acting on them properly, the app selection is minimal, and voice assistants are limited. Amazfit’s own app is capable and less polished than Apple’s or Garmin’s, and health analysis is less developed. Single-band GPS means it drifts in cities and under trees. Build quality is aluminum and glass at a price, not sapphire and titanium. And long-term software support from a lower-cost brand is less certain than from Apple or Google.

Who it is for: first-time buyers, anyone who wants continuous sleep tracking without nightly charging, holiday and travel use, and anyone who wants the essentials cheaply.

See the Amazfit Bip Max on Amazon →

6. Samsung Galaxy Fit 3 — best simple fitness band

Some people do not want a smartwatch. They want step counts, heart rate, sleep and the time, on something light enough to forget about, with a battery that lasts a two weeks. A band does that better than a watch does, because it is not trying to be a phone on your wrist.

The Fit 3 is the best current example: a 1.6-inch AMOLED display that is large for a band and readable, 5ATM and IP68 so it is swim-ready and dust-resistant, and up to fourteen days from its battery. It is light enough to sleep in without noticing, which is exactly what makes the sleep data useful. Customer rating is 4.4 stars.

Why it made the list: it is the honest answer for a large group of buyers who would be happier with less. It is also the right choice as a first tracker for someone who is not sure they want one, for a teenager, or for anyone who finds a full watch too bulky to sleep in — and because it is inexpensive, losing or breaking it is not an event.

Where it disappoints: it is a band, not a watch — no app store, no calls, no meaningful interaction with notifications beyond reading them, and no built-in GPS, so recording a run accurately means carrying your phone. It works with Android and not with iPhone, which is an unusual limitation for a band and the main reason to check before buying. Samsung’s deeper health features are reserved for its watches and phones. And a proprietary strap fitting limits your options.

Who it is for: people who want tracking without a smartwatch, first-time trackers, anyone who finds watches too bulky at night, and Android users on a budget.

See the Samsung Galaxy Fit 3 on Amazon →

Getting the most out of it

• Turn off the notifications you do not need, on day one. A watch that buzzes for every email is a watch you take off within a two weeks. Messages and calls, and nothing else, is a good starting point.
• Decide when you charge it and make it a habit — in the shower, at your desk, while cooking. If you charge at bedtime you have chosen not to track sleep.
• Turn the always-on display off if battery life matters to you. It roughly halves whatever the quoted figure is.
• Set the wear position properly: snug, a finger’s width above the wrist bone. Most poor data is a fit problem.
• Pair a chest strap for serious training. Optical wrist readings lag badly during intervals and lifting; a strap costs little and is far more accurate.
• Look at weekly trends, not daily numbers. The value in all of this is patterns over time, and the daily figures have more noise than signal.
• Set up emergency contacts and fall detection if the watch offers them, particularly for older users or if you exercise alone. Five minutes now.
• Rinse and dry it after swimming, especially in salt water, and use a silicone strap in the water rather than leather or fabric.

Common mistakes

• Buying an Apple Watch with an Android phone. It simply will not work. This still happens.
• Buying a Galaxy Watch for a non-Samsung Android phone and paying for features you cannot use.
• Expecting sleep tracking from a watch you charge at bedtime. The two are incompatible.
• Treating sleep stage breakdowns as measurements. They are inferences. Total sleep and wake time are the useful parts.
• Using wrist SpO2 or heart rate to decide whether you are unwell. Symptoms beat sensors. Call a doctor.
• Ignoring an irregular rhythm notification. That one is worth taking to a doctor even if you feel fine.
• Buying a 46mm case for a small wrist. Measure first, especially if you plan to sleep in it.
• Not checking what is behind a subscription before you buy, including whether your own history stays visible if you stop paying.
• Buying ecosystem-locked if you might switch phones. Garmin or Amazfit for that.

Frequently asked questions

Can I use an Apple Watch with an Android phone?

No. There is no Android support of any kind and there never has been, so an Apple Watch paired to an Android phone does essentially nothing. If you are on Android, the Pixel Watch, a Galaxy Watch, a Garmin or an Amazfit are your options. And if you think you might move from iPhone to Android in the next few years, remember that an Apple Watch does not come with you.

How accurate is smartwatch heart rate?

Good at rest and during steady effort, and noticeably worse during intervals, weight training and anything with a lot of wrist movement, where optical sensors lag or lock onto the wrong rhythm. A snug fit above the wrist bone helps considerably. If you train seriously and want reliable numbers, pair an electrical chest strap, which measures the heart’s signal directly and is dramatically more accurate for a small fraction of the watch’s cost.

Is smartwatch sleep tracking reliable?

Partly. Total sleep time, when you fell asleep and how often you woke are reasonably useful. The breakdown into light, deep and REM sleep is inferred from movement and heart rate variability rather than measured, so treat it as a rough pattern rather than a figure to act on. The most important requirement is simply that the watch is on your wrist every night, which is why battery life matters more than sensor specifications for this particular use.

Can a smartwatch detect a heart problem?

Some can screen for irregular rhythms, and on several watches that feature has regulatory clearance in some markets and has led to real diagnoses. It is a screening tool: it produces both false positives and false negatives, and a notification means make an appointment rather than draw a conclusion. Equally important in the other direction — a normal reading is not evidence that you are well. If you have symptoms, see a doctor regardless of what your watch says.

Do I need a cellular model?

Only if you want to leave your phone behind and still take calls and messages — typically runners and cyclists, and parents who want a watch on a child. It costs more up front and adds a monthly carrier charge, and it reduces battery life further. Most buyers of cellular models rarely use the feature, so be honest about whether you will.

How long will a smartwatch last?

Realistically three to five years, and the limit is usually the battery rather than the electronics. No smartwatch has a user-replaceable battery, and capacity falls over a few hundred charge cycles — so a watch charged nightly ages faster than one charged every two weeks. Software support is the other limit: check how long the manufacturer supported its previous models before committing.

Watch or fitness band?

A band if you want steps, heart rate, sleep and the time, in something light with a two weeks of battery. A watch if you want to interact with notifications, use apps, pay for things, take calls, or use fall detection and emergency features. Many people buy a watch and would have been happier with a band; rather fewer regret it the other way. Be honest about whether you want a small computer on your wrist or a tracker.

Is tracking my health constantly a good idea?

For many people it is really motivating and occasionally important. For some it produces anxiety, because continuous monitoring shows a great deal of normal variation and it is easy to read meaning into noise. If you find yourself checking readings repeatedly or worrying about numbers that are within normal limits, turning off the non-essential notifications, or taking the watch off at night for a while, is a reasonable and sensible response. If that worry is persistent, it is worth mentioning to a doctor.

What we would buy

Start with your phone. iPhone means Apple Watch or a Garmin. Android means Pixel Watch, Galaxy Watch, Garmin or Amazfit. That narrows it before anything else.

On Android, the Google Pixel Watch 5 is the best-rated and best-looking option with Fitbit’s health platform behind it. On iPhone, the Apple Watch Series 12 has no real competitor, and its fall detection and emergency features are the most actually valuable things in this category. If your phone is a Samsung, the Galaxy Watch 8 unlocks features the others cannot.

If what you want is data rather than notifications, the Garmin Venu 3 is the pick — multi-day battery means it actually tracks every night, and it works with either phone platform. For twenty days between charges at a fraction of the price, the Amazfit Bip Max. And if you would honestly be happier with less, the Samsung Galaxy Fit 3 does the tracking without the smartwatch.

Whichever you buy, wear it snug and a finger’s width above the wrist bone, turn off the notifications you do not need, and read the weekly trends rather than the daily numbers. And remember what these devices are: useful wellness tools that estimate, not instruments that measure. If you feel unwell, that matters more than anything on the screen.

For more of the same kit, see our guides to the best wireless earbuds, the best noise canceling headphones, and the best e-readers.

Also worth reading: our guide to the best power banks.

Also worth reading: our guide to the best wireless chargers.

Also worth reading: our guide to the best Bluetooth trackers — including why the finding network matters far more than the tag.