Xiaomi Watch S4 vs Samsung Galaxy Watch8 / Watch8 Classic

Xiaomi Watch S4

Xiaomi Watch S4

vsSamsung Galaxy Watch8 / Watch8 Classic

Samsung Galaxy Watch8 / Watch8 Classic

Xiaomi Watch S4Samsung Galaxy Watch8 / Watch8 Classic
Display1.32" AMOLED, 466 x 466 pixels, 352 ppi, 60Hz, up to 1500 nits (HBM)Super AMOLED with full-colour always-on display; 1.47-inch (44 mm) or 1.34-inch (40 mm, 46 mm Classic); sapphire crystal; up to 3,000 nits (Samsung claim)
Size41 mm; 41.2 x 41.2 x 9.5 mm, approx. 32 g without strap—
CaseStainless steel frame—
BatteryUp to 8 days (light use), up to 4 days (normal use), up to 3 days (heavy use), 320 mAh, magnetic 2-pin charging dock435 mAh (44 mm), 325 mAh (40 mm), 445 mAh (Classic 46 mm)
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 models, Bluetooth 5.3, Wi-Fi, NFC, L1+L5 dual-frequency GPS
SensorsHeart rate with blood oxygen, accelerometer, gyroscope, ambient light, compass, barometer, skin temperature—
Sports Modes150+ sports modes—
OSXiaomi HyperOS 3Wear OS 6 with One UI 8 Watch; Gemini out of the box
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 green—
Sizes—Watch8 in 40 mm and 44 mm (Graphite, Silver); Watch8 Classic in 46 mm (Black, White)
Chipset—Exynos W1000 (5-core, 3 nm)
Memory / Storage—2 GB memory, 32 GB or 64 GB storage depending on model
Body—8.6 mm thick and 30-34 g (Watch8); 10.6 mm and 63.5 g (Classic); 5ATM + IP68 / MIL-STD-810H
Health—Samsung BioActive Sensor, temperature sensor, Antioxidant Index, Bedtime Guidance, Vascular Load, Running Coach