Xiaomi Watch S4 vs Samsung Galaxy Watch 8 (40mm) Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Xiaomi Watch S4 Samsung Galaxy Watch 8 (40mm)
Released · Oct 29, 2024
Expected release · Jul 25, 2025
1.4-inch
1.3-inch
486 mAh
325 mAh
2GB · 32GB

Availability

Officially announced
Jul 09, 2025
Scheduled release
(Official) Jul 25, 2025
Prices (MSRP)
$350

Design

Dimensions
1.86 x 1.86 x 0.47 inches
47.3 x 47.3 x 12 mm
1.57 x 1.59 x 0.34 inches
40 x 40.4 x 8.6 mm
Weight
1.57 oz (44.5 g) 1.06 oz (30.0 g)
Materials
Back: Aluminum Back: Aluminum
Resistance
50m/5ATM water resistance Water (up to 5 meters), Dust; IP68; MIL-STD-810 certified
Colors
Black, Silver

Display

Size
1.4-inch 1.3-inch
Type
AMOLED, 2200 nits Super AMOLED
Resolution
466x466px, 461 PPI 438x438px, 462 PPI
Protection
Sapphire

Hardware

System chip
Exynos W1000 (3 nm)
Memory
2GB/32GB
OS
Wear OS

Battery

Type
486 mAh, Li - Polymer 325 mAh

Camera

Connectivity & Features

Bluetooth
5.3 5.3
WLAN
a,b,g,n,ac
802.11 a, b, g, n, ac
Sensors
Accelerometer, Gyroscope, Compass, Heart rate, Blood Oxygen Accelerometer, Gyroscope, Pedometer, Compass, Heart rate, Thermometer, Barometer, Step detector, ECG, Blood Oxygen, Ambient light sensor
Location
GPS, A-GPS, Galileo, BeiDou, QZSS Glonass, Galileo, BeiDou
Other
NFC NFC

Cellular

Data Speed
LTE, HSDPA+ (4G) 42.2 Mbit/s LTE
SIM type
eSIM eSIM
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