Xiaomi Watch S4 vs Samsung Galaxy Watch8 Classic

Xiaomi Watch S4

Xiaomi Watch S4

vsSamsung Galaxy Watch8 Classic

Samsung Galaxy Watch8 Classic

Xiaomi Watch S4Samsung Galaxy Watch8 Classic
Display1.32" AMOLED, 466 x 466 pixels, 352 ppi, 60Hz, up to 1500 nits (HBM)1.34-inch (438 x 438) Super AMOLED, always on, sapphire crystal, up to 3,000 nits
Size41 mm; 41.2 x 41.2 x 9.5 mm, approx. 32 g without strap—
CaseStainless steel frame46 mm, 46.4 x 46 x 10.6 mm, 63.5 g (without band), rotating bezel and Quick Button
BatteryUp to 8 days (light use), up to 4 days (normal use), up to 3 days (heavy use), 320 mAh, magnetic 2-pin charging dock445 mAh typical, fast wireless charging
Water Resistance5 ATM—
PositioningBuilt-in dual-frequency L1+L5 GNSS: GPS, Galileo, GLONASS, BeiDou, QZSS—
ConnectivityBluetooth 5.4, Bluetooth calling, NFC (varies by region)LTE (LTE models), Bluetooth 5.3, Wi-Fi 2.4 + 5 GHz, NFC, dual-frequency GPS
SensorsHeart rate with blood oxygen, accelerometer, gyroscope, ambient light, compass, barometer, skin temperatureSamsung BioActive Sensor, temperature, accelerometer, barometer, gyro, geomagnetic, light, 3D Hall sensor
Sports Modes150+ sports modes—
OSXiaomi HyperOS 3Wear OS 6 (One UI 8 Watch) with Gemini
CompatibilityAndroid 8.0 or later, iOS 14.0 or later—
StrapFluororubber (black, mint green), leather (white), Milanese (Sunset gold), 120-190 mm adjustable—
ColorsBlack, White, Sunset gold, Mint greenBlack, White
Processor—Exynos W1000 (5-core, 3 nm)
Memory / Storage—2 GB RAM, 64 GB
Durability—5ATM, IP68, MIL-STD-810H
Price—449 pounds (Bluetooth) or 499 pounds (LTE) in the UK at launch