With a 41 mm casing that measures merely 9.5 mm in depth, this device packs in a 1.32″ AMOLED screen (466 × 466 px) reaching 2200 nits, plus a 320 mAh cell delivering as much as eight days of standard usage and next-gen optical sensors. HyperOS 2 runs the show, aided by Bluetooth 5.4 for calls and multi-constellation GPS, all while tipping the scales at a mere 32g.
An aluminium alloy frame pairs with a swappable bezel and a rotating crown; the included fluorocarbon strap can be removed without tools and accepts any 20mm bracelet. Perfect for slimmer wrists while retaining a strong presence.
The AMOLED panel runs at 60 Hz and stays legible in direct sunshine thanks to its 2200 nits peak. It offers a colour Always-On mode and over 200 dials, some animated with mascots that change based on your activity.
Tracks heart rate, SpO₂, stress and sleep using a new optical module that promises up to 98% accuracy. Provides more than 150 sport modes and Bluetooth heart rate broadcasting for external devices.
The 320 mAh battery lasts up to 8 days (or 3 days with AOD on). A five-minute top-up on the magnetic charger yields up to 48 hours of use, handy for short getaways.
Certified to 5 ATM, it copes with pool swimming and cold showers. GPS supporting Galileo, BeiDou, QZSS and GLONASS boosts accuracy in urban settings, while optional NFC allows contactless payments in compatible regions.
The Xiaomi Watch S4 (41mm) succeeds by condensing the 46mm model's experience into a lighter build, without cutting brightness or sensors. Against an Apple Watch Series 9 41 mm, it delivers much longer battery life and better value, though it lacks the ECG and iOS integration its rival offers. Versus the Samsung Galaxy Watch 7 40mm, it impresses with its interchangeable bezel and rapid charging, but misses Wi-Fi connectivity and a richer app store. If you value lightness, endurance and a smooth HyperOS ecosystem, the Watch S4 ranks among the market's most well-rounded choices, keeping the Chinese brand's famed value for money.
| Brand | XIAOMI |
|---|---|
| Country | China |
| Address of origin | Anningzhuang Road Xiaomi Campus, Beijing, BJ 100085 |
| EU responsible person | Xiaomi Technology Netherlands B.V. |
| Address | C/ de Orense, 70, Tetuán Madrid 28020 |
| [email protected] | |
| Phone | 34900128128 |
