The Xiaomi Watch S4 blends timeless craftsmanship with modern smartwatch capabilities. It features a bright 1.43″ AMOLED display (466 × 466, 326 ppi) with a peak brightness up to 2200 nits and a fluid 60 Hz refresh rate. The design includes an aluminum alloy case, rotating crown for intuitive navigation, and a bezel that can be swapped—offered in Rainbow or Silver styles—to match your mood.
This watch supports dual-frequency GNSS (GPS, GLONASS, BeiDou, Galileo, QZSS), Bluetooth 5.3 for calls and notifications, NFC for payments, and has a built-in speaker and two microphones. Packed with sensors for heart rate, SpO₂, stress, sleep, 150+ workout modes, and health insights via HyperOS 2.0, it's designed for both everyday use and fitness alike. A powerful 486 mAh battery delivers up to 15 days of use, with magnetic fast charging that offers 2 days of use in just 5 minutes.
Features:
-
1.43″ AMOLED display (466×466 px, up to 2200 nits brightness, 60 Hz)
-
Rotating crown and interchangeable bezels (Rainbow & Silver)
-
Dual-frequency GNSS (L1+L5), Bluetooth 5.3, NFC, microphone(s), speaker
-
HyperOS 2.0 smart platform: voice control, smart home integration, over 150 sports modes, health tracking
-
Robust health features: heart rate, SpO₂, sleep, stress, 60-second wellness report
-
486 mAh battery supports up to 15-day usage; 5-minute fast charge = 2 days use
-
Water-resistant up to 5 ATM (swim-ready)
Specifications:
| Specification |
Details |
| Display |
1.43″ AMOLED, 466×466 px (326 ppi), 60 Hz refresh, up to 2200 nits |
| Case & Controls |
Aluminum alloy case, rotating crown, interchangeable bezels (Rainbow & Silver) |
| Battery |
486 mAh; ~15 days typical; fast charge (5 min = 2 days) |
| Connectivity |
Dual-frequency GNSS, Bluetooth 5.3, NFC, speaker, 2 × microphones |
| Sensors |
Heart rate (with SpO₂), stress, sleep, ambient light, compass, barometer, accelerometer, gyroscope, Hall sensor |
| Smart Features |
HyperOS 2.0, voice assistant, smart home controls, 150+ fitness modes |
| Water Resistance |
5 ATM (up to 50 m) |
| Dimensions |
~47.3 mm diameter × 12 mm thickness; weight ~44 g |
| Compatibility |
Android 8.0+ / iOS 14.0+ |
| Strap & Bezel Options |
Rainbow (fluororubber + nylon), Silver (fluororubber) |
