Xiaomi Watch S2 vs Xiaomi Watch S4
Product
Price
150 USD
149 USD
Status
Available
Available
Brand
Xiaomi Mobiles
Xiaomi Mobiles
Model No
Xiaomi Watch S2
M2424W1, M2425W1
Launch Date
2022, December 11
2024, October 29
Technology
No cellular connectivity
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA
4G bands
LTE
Speed
HSPA, LTE
Dimensions
46 x 46 x 10.7 mm (1.81 x 1.81 x 0.42 in)
47.3 x 47.3 x 12 mm (1.86 x 1.86 x 0.47 in)
Build
Sapphire crystal front, stainless steel frame
Aluminum alloy frame, stainless steel bezel
Scratch/drop-proof glass
Waterproof (5ATM)
SIM
No
eSIM (market/region dependent)
Colors
Black, Silver, Light Gold
Black, Silver
Weight
44.5 g (1.59 oz)
Case size
46 x 46 mm
47.3 x 47.3 mm
Water resistance
5ATM
Type
AMOLED
AMOLED, 2200 nits (peak)
Size
1.43 inches
1.43 inches
Resolution
466 x 466 pixels (~326 ppi density)
466 x 466 pixels (~326 ppi density)
OS
Proprietary OS
HyperOS 2
Card Slot
No
Capacity
Li-Po 500 mAh, non-removable
Li-Po 486mAh, non-removable
Charging
Wireless
Health sensors
Heart rate, SpO2, Temperature, Body composition (BIA)
Heart rate, SpO2
Sensors
Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature), body composition (BMI)
Accelerometer, gyro, compass, barometer, heart rate, SpO2
Loudspeaker
Yes
3.5mm jack
No
WLAN
No
Bluetooth
5.2, A2DP, LE
5.3, A2DP, LE
GPS
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Yes
Yes (market/region dependent)
Radio
No
USB
No