Xiaomi Compare S3 review

Xiaomi’s smartwatch game has incessantly evolved for the rationale that considerable Mi Compare came on the scene in 2019. We’ve considered diversified Xiaomi wearables since – some with straightforward proprietary working techniques that’s changed more name than parts and a few with Google’s more capable, nonetheless power-hungry WearOS. Xiaomi Compare S3 is the predominant smartwatch from the mark to commence with HyperOS which is the maker’s in-residence working device that powers quite a lot of alternative devices including IoT residence equipment and the maker’s SU7 electric automobile.

Compare S3 brings every thing you’d need in a smartwatch – a brilliant and crisp AMOLED masks, the usual combine of health and notify monitoring, GNSS positioning, NFC funds, and the ability to rob calls from your wrist. It’s also extremely customizable with interchangeable gaze bezels and straps permitting you to adapt the gaze to your style.

At €130/£130 in Europe, Xiaomi is positioning Compare S3 as its run-to smartwatch for 2024 and we’ve spent the final two weeks attempting out it out.

Xiaomi Compare S3 specifications

  • Level to: 1.43″ AMOLED touchscreen, 466 x 466 px decision, 60Hz refresh price, 600 nits height brightness
  • Straps: Removable straps, 22mm width, 140-210mm adjustable length
  • Aspects: 5ATM ranking, Exact-time heart price display screen, 24/7 Blood Oxygen stage display screen, Sleep monitoring, Stress monitoring, Sports actions monitoring, VO2 Max, Step Counter, Meditation, Notifications, Indolent Alert, Mobile phone Finder, Climate Forecast, Tune and Digicam Alter, Recorder, Scare, Stopwatch, Compass, Barometer, Flashlight
  • Sports actions Modes: Exterior Speed, Indoor Speed, Exterior Stroll, Exterior Cycle, Hiking, Strength Practising, Leap rope, Freestyle (150+ more in Mi Fitness app)
  • Sensors: 12-channel PPG optical heart price sensor, SpO2 sensor, 3-axis accelerometer, barometer, rotor Vibration Motor
  • Connectivity: Bluetooth 5.2, Properly matched with Android 8.0 and iOS 12+, twin-band L1+L5 GNSS, NFC (market dependent), microphone and speakers
  • Battery: 486 mAh
  • Colours: Black, Silver
  • Dimensions: 47 x 47 x 12 mm
  • Weight: 44 grams without strap


Compare S3 brings a acquainted originate that falls per the Xiaomi Compare 2 generation. It’s a natty gaze with a 47mm casing and a 1.43-lunge AMOLED masks which certainly takes some getting veteran to in case you’re coming from a smaller gaze or smartband. The excellent fresh addition to the Wach S3 is the stainless-steel bezel which is detachable and permits for unparalleled customization alternatives.

A transient counterclockwise twist and flip detaches the bezel and frees up the wach to soak up any of the four extra kinds which we only presume will grow in quantity from right here. The bayonet mount which is admire you’d receive on a camera lens is a actually neat originate alternative that locks in securely. Every gaze bezel comes with its possess gaze face which at the moment toggles on when it’s linked.

The interchangeable bezels coupled with the never-ending choice of 22mm gaze bands enable unparalleled customization, which is an improbable potential to elevate fresh lifestyles to the gaze down the road. Sadly, the bezel is good for looks to be like and doesn’t add any performance admire you’d secure on a Galaxy Watch6 Classic and its rotating bezel. Our silver Compare S3 review unit comes bundled with an identical stainless-steel gaze bezel and silver fluoro rubber gaze strap.

Compare S3 feels as premium because the more pricey smartwatches we’ve examined with its swish aluminum frame, stainless-steel gaze bezels, and the plethora of 22mm gaze strap alternatives. Despite the natty formactor it come what could feels light and unobtrusive on the wrist. Compare S3 weighs 44 grams without the strap and is 12mm thick. It’s also 5ATM waterproof so swimming sessions are a run.

The 1.43-lunge AMOLED expose presents saturated colors and great viewing angles. It will get brilliant ample even for outside – maxing out at 600 nits of height brightness and also parts a dedicated auto brightness sensor. The expose refreshes at 60Hz making it feel snappy and it’s also protected by Gorilla Glass 3. We must expose that some of the AOD alternatives are more durable to study out in command sunlight.

There are two buttons for navigation with the finish one performing as a shortcut to the app menu whereas also doubling as a back button whereas the bottom one is programmable and could additionally be paired to commence any app nonetheless acts as a shortcut to the notify web page by default.

Despite its aluminum alloy frame and stainless-steel bezel, Xiaomi Compare S3 weighs 44 grams which doesn’t feel heavy on the wrist and is comfy to position on all day lengthy. The retail box parts the Compare S3, its proprietary two-pin magnetic charging puck which ends in a USB-A cable, and the standard combine of manuals. Wi-fi charging looks to be the absolute best omission.


Xiaomi Compare S3 packs a lengthy spec sheet with one of its key parts being HyperOS. Xiaomi’s proprietary IoT platform looks to be like acquainted to MIUI Compare, nonetheless sadly doesn’t make stronger third-celebration apps outside of China.

There are 31 constructed-in apps including Amazon Alexa, a phone dialer, a affirm recorder, an NFC cards app alongside the total normal spot of apps you’d receive on a smartwatch admire an apprehension, a great-looking out detailed climate app to boot to health and notify monitoring apps. You furthermore could secure reminders, calendar, contacts, media controls, breathing exercises, a barometer, compass, flashlight, and a camera shutter.

Xiaomi Compare S3 apps

Compare S3 parts a microphone and speaker permitting you to waste and rob calls from your paired phone over Bluetooth. Our review unit doesn’t feature eSIM connectivity even supposing Chinese versions cease, gaining total independence from your phone. Xiaomi will most definitely be providing push notifications on the gaze for quite a lot of apps nonetheless these are on the total right straightforward signals without the selection to answer or toggle any extra actions.

There are two vibration settings with identical outdated and solid values. Apart from to the 2 physical buttons, Xiaomi added expeditiously gestures which could perhaps be a gimmicky potential to commence extra apps by tilting your wrist 90 degrees or performing a spherical movement. Suggestions are puny right here with make stronger for summoning Amazon Alexa, the climate app, rejecting incoming calls, and triggering the some distance-off camera shutter characteristic to your paired phone.

Compare S3 also helps twin-band (L1 and L5) satellite positioning over BeiDou, GPS, GLONASS, Galileo, and QZSS to boot to NFC funds thru Xiaomi Pay. The caveat with funds is that it is possible you’ll perhaps only add Mastercard-issued cards and pay at Mastercard price terminals.

On the health monitoring aspect, Compare S3 parts a 12-channel heart price sensor with 24/7 heart price monitoring, SpO2 monitoring, stress, and sleep monitoring with an updated fresh sleep algorithm providing REM sleep and breathing scores.

Xiaomi’s Mi Fitness app is one major set up you’ll ought to your paired phone to toggle many of the functions on the Compare S3. The gaze helps a total of 161 notify modes covering right about every notify it is possible you’ll mediate from operating and weightlifting to as nuanced as kite flying and board video games.

You secure access to the paunchy record of actions internal the Exercises app on the gaze which is neat and Mi Fitness can retain to a month’s price of health and notify info. Chances are high you’ll perhaps also sync your health and notify info with Apple Properly being, Google Fit, Strava and Suunto.

There are 13 pre-loaded gaze faces with diversified ranges of customizable device for gaze issues and accent colors. You’ll receive an improbable alternative of extra gaze faces internal the Mi Fitness app too.

Compare S3 also comes with tumble detection and emergency assistance functions even supposing they are puny to Android users. These encompass the ability to call emergency services or an emergency contact of your picking and send out an SMS message in the tournament of a tumble. Chances are high you’ll perhaps also store your key medical info on the gaze which is able to be displayed in case you trigger the emergency assistance feature. Bear in mind of that these settings must be configured internal the Mi Fitness app to your phone beforehand.

Tool and performance

Whereas its naming is fresh, HyperOS failed to provide any tangible differences over old non-Wear OS Xiaomi watches in the midst of our attempting out. The app icons and menus enjoy bought a brand fresh coat of paint nonetheless that’s about it. Xiaomi says that HyperOS will allow for more seamless connectivity and integration between its devices down the road, nonetheless for now or now not it is mostly the identical aspect below a brand fresh name.

Whereas Google’s WearOS presents broad third-celebration аpp make stronger and savvier smartphone alternative talents, a gaze admire the S3 with HyperOS is preferable in case you right enjoy to duvet the basics of a smartwatch whereas also getting great battery lifestyles. As an alternative of a dedicated maps app and the selection to answer to notifications, I failed to feel I became once lacking any performance on the Compare S3 in the midst of my review duration.

The UI is straightforward and runs without any noticeable disappear. Chances are high you’ll perhaps work on the side of the gaze in a couple of how – by double-taping the masks, elevating your wrist, or by pushing both of the aspect buttons. From there it is possible you’ll perhaps swipe down for notifications, or swipe up from the bottom to toggle the retain watch over center web page.

Swiping left or perfect presents you access to your widgets which could perhaps be cards of apps bundled collectively. Chances are high you’ll perhaps configure as much as four apps in a single widget card at once from the gaze or internal the widgets tab on the Mi Fitness app. Notifications on the Compare S3 arrive promptly nonetheless we already covered the lack of any extra performance because it is possible you’ll perhaps only brush aside them.

The onboard speaker does the job then all all over again it’s a bit laborious to listen to to in the midst of calls in noisier environments. The microphone handles affirm pickup neatly with people on the other finish of calls reporting loud and likely reception on my segment. The gaze kept a stable connection to my paired iPhone 15 Legitimate thru the review duration with no drops in

Properly being monitoring

Compare S3 helps configurable heart price monitoring by job of a 12-channel PPG optical heart price sensor. Chances are high you’ll perhaps configure the readings between 1 and 30-minute intervals with the shorter values engrossing up more of your battery lifestyles. Coronary heart price readings had been on par with other now not too lengthy previously examined smartwatches. Chances are high you’ll perhaps also spot excessive and low heart price signals with signals showing when you’ve passed or dropped below a predetermined threshold.

Blood oxygen monitoring (SpO2) will most definitely be supported with 24/7 readings. By job of accuracy, we found each and every the center price and SpO2 outcomes provide identical values to what you’d secure on competing smartwatches and other health trackers admire dedicated pulse oximeters. Don’t keep a query to medical grade readings right here as wearables admire this are intended for monitoring your widespread neatly-being. We when in contrast the center price and blood oxygen measurements from the gaze with these from a genuinely knowledgeable heart price display screen and pulse oximeter and bought identical values.

Coronary heart price, blood oxygen and sleep readings in the Mi Fitness app

Xiaomi is promoting its fresh sleep examining algorithm with claims of improved accuracy and we can exclaim it does an improbable job of logging valid run-to-sleep and wake-up instances. You secure a detailed breakdown of your sleep by category with deep, light and fleet note movement (REM) sleep. Wearing the Compare S3 for a week will generate your possess non-public sleep insight document with an assigned drowsing animal per your drowsing pattern to boot to a suggested schedule on how to spot your day for optimum leisure and recovery.

I did ride a malicious program with a couple of random extra wide awake instances added to a couple of drowsing sessions although I became once in mattress and failed to stand up in any admire in the midst of these nights. With somewhat luck, Xiaomi can fix this with future machine updates. With the SpO2 monitoring feature enabled in the midst of sleep monitoring you also secure breathing scores which is able to warn you of early indicators of sleep apnea.

Activity monitoring

Leaping to notify monitoring, Xiaomi Compare S3 failed to disappoint with valid step counting and straightforward-to-read needed notify info. Most notify modes present off your widespread vitals admire heart price charts, energy burned, notify intensity, VO₂ max, and urged recovery instances. Walking, operating and hiking also secure some more in-depth metrics admire average tempo, cadences, hurry, and elevation waste. The gaze also helps automated notify detection for a couple of actions including walking, operating, biking, rowing, soar rope, and elliptical.

Activity monitoring metrics in Mi Fitness app

I did stumble upon a malicious program the build my notify monitoring randomly stopped after I unlocked the gaze to study thru my notify metrics. I found myself lacking upwards of 20 minutes in the midst of a notify earlier than I seen the notify became once paused without any extra input from my aspect.

GNSS positioning locks in as at the moment in case you make a choice out any of the supported exercises even when you are indoors which became once a surprising feat. Positioning info became once somewhat valid on a hiking path, nonetheless now not so worthy in the midst of walks in town because it didn’t name the true aspect of the sidewalk from my route.

The dedicated ski mode is a neat addition covering distance traveled, average tempo, and a dedicated Ski Observe Blueprint which it is possible you’ll perhaps half with web site visitors. Sadly Compare S3 doesn’t make stronger the ability to load GPX structure maps on the gaze for navigating hikes or runs which is something it is possible you’ll perhaps cease on opponents admire Huawei GT4 and Amazfit GTR 4.

Battery Lifestyles

Xiaomi Compare S3 parts a 486 mAh battery which is alleged to final as lengthy as 15 days on a tag with identical outdated usage and 5 days with Repeatedly-On Level to enabled. Compare S3 supplied a valid battery patience of 4.5 days in my notify case. We bought these numbers with the AOD toggled on, the total health monitoring parts turned on 24/7, a couple of rapid phone calls, and a 1:30-hour day by day notify. More life like health monitoring and disabling the AOD extends the patience to 7 days.

The gaze is brilliant ample to present you an estimated battery lifestyles per your usage pattern internal the battery menu even supposing we found it to overestimate the values. There’s an ultra power-saving mode that will squeeze out a couple of extra days of usage nonetheless you’ll enjoy to flip off as regards to the total parts on the gaze to achieve these values.

Charging occurs completely thru the 2-pin magnetic puck that comes bundled with the gaze. It’s backward appropriate with the one found on the Xiaomi Compare 2 and Compare S1 sequence which is valid. A 5-minute prime-up will get the gaze from 0 to 20% whereas a paunchy tag takes 1 hour. The one considerable enlighten then all all over again is the lack of any wireless charging which is an improbable caveat for a smartwatch.


Xiaomi Compare S3 brings a combine of premium manufacture and modular originate with unparalleled customizability alternatives. The detachable gaze bezels give the gaze one way of individuality atmosphere it aside from the pack of opponents. Chances are high you’ll perhaps without misfortune elevate fresh lifestyles to the Compare S3 with some of the shiny bezels and the usual 22mm gaze bands waste decided that worthy more customizability alternatives.

The style-centric device is backed by valid health and notify monitoring and whereas it is going to now not provide the capabilities of a true WearOS gaze and all that it entails, it does the basics neatly ample whereas providing solid battery lifestyles.

The 1.43-lunge AMOLED expose is crisp and straightforward to read even outside in command sunlight. The twin-band GNSS positioning connects fleet and presents first price monitoring and Bluetooth calling also works great. Xiaomi Pay is somewhat puny by its rapid record of supported bank cards and sleep-monitoring leaves some to be desired.

We also would enjoy liked to study out wireless charging for these instances in case you will need to now not carrying the proprietary Xiaomi charger and richer notification make stronger with alternatives to answer to incoming messages.

Within the waste, in expose so that you simply can particular your style and enjoy the selection to totally remodel how your gaze looks to be like down the road then the Compare S3 is an improbable choice with no actual opponents. It’s also bundled with Xiaomi 14 sequence pre-orders in certain markets which is an improbable freebie to cross along with your mark-fresh phone.

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