Screen size
Watch S4 41mm1.3"
Watch S5 46mmWinner: 1.5"+11%
Quick verdict
Watch S5 46mm leads the measured specs 5-3.
Measured wins
Watch S4 41mm
3
spec wins
Ties
4
equal specs
Watch S5 46mm
5
spec wins
Overall winner
Screen size
Technology
Watch S4 41mm
No cellular connectivity
Watch S5 46mm
HSPA / LTE
2G bands
Watch S4 41mm
N/A
Watch S5 46mm
3G bands
Watch S4 41mm
N/A
Watch S5 46mm
HSDPA - cellular model only
4G bands
Watch S4 41mm
N/A
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Watch S5 46mm
LTE - cellular model only
GPRS
Watch S4 41mm
No
Watch S5 46mm
No
EDGE
Watch S4 41mm
No
Watch S5 46mm
No
Speed
Watch S4 41mm
-
Watch S5 46mm
HSPA, LTE
Announced
Watch S4 41mm
2025, June 26
Watch S5 46mm
2026, May 28
Status
Watch S4 41mm
Available. Released 2025, June 26
Watch S5 46mm
Available. Released 2026, May 28
Dimensions
Watch S4 41mm
41.2 x 41.2 x 9.5 mm (1.62 x 1.62 x 0.37 in)
Watch S5 46mm
46 x 46 x 11 mm (1.81 x 1.81 x 0.43 in)
Weight
Watch S4 41mm
32 g (1.13 oz)
Watch S5 46mm
46 g (1.62 oz)
Build
Watch S4 41mm
Stainless steel bezel and frame
Watch S5 46mm
Glass front, stainless steel frame, stainless steel/ceramic/forged carbon bezel
SIM
Watch S4 41mm
No
Watch S5 46mm
eSIM (market/region dependent)
Other
Watch S4 41mm
Waterproof (5ATM)
Watch S5 46mm
Waterproof (5ATM)
Type
Watch S4 41mm
AMOLED, 1500 nits (HBM), 2200 nits (peak)
Watch S5 46mm
AMOLED, 1500 nits (HBM), 2500 nits (peak)
Size
Watch S4 41mm
1.32 inches
Watch S5 46mm
1.48 inches
Resolution
Watch S4 41mm
466 x 466 pixels (~320 ppi density)
Watch S5 46mm
480 x 480 pixels (~323 ppi density)
Protection
Watch S4 41mm
Scratch/drop-proof glass
Watch S5 46mm
Drop-proof glass
OS
Watch S4 41mm
HyperOS 2
Watch S5 46mm
Xiaomi HyperOS 3
Card slot
Watch S4 41mm
No
Watch S5 46mm
No
Internal
Watch S4 41mm
Unspecified
Watch S5 46mm
Unspecified storage
Other
Watch S4 41mm
No
Watch S5 46mm
No
Loudspeaker
Watch S4 41mm
Yes
Watch S5 46mm
Yes
3.5mm jack
Watch S4 41mm
No
Watch S5 46mm
No
WLAN
Watch S4 41mm
No
Watch S5 46mm
Yes (file transfer only)
Bluetooth
Watch S4 41mm
5.4, A2DP, LE
Watch S5 46mm
5.4, LE
Positioning
Watch S4 41mm
GPS, GLONASS, GALILEO, BDS, QZSS
Watch S5 46mm
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Watch S4 41mm
Yes (market/region dependent)
Watch S5 46mm
Yes (market/region dependent)
Radio
Watch S4 41mm
No
Watch S5 46mm
No
USB
Watch S4 41mm
No
Watch S5 46mm
No
Sensors
Watch S4 41mm
Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature)
Watch S5 46mm
Accelerometer, gyro, compass, barometer, heart rate, SpO2
Type
Watch S4 41mm
Li-Po 320 mAh
Watch S5 46mm
Li-Po 815 mAh
Colors
Watch S4 41mm
Black, Green, White, Gold
Watch S5 46mm
Black, Silver, Ceramic Blue, Jungle Green, Beige (eSIM)
Models
Watch S4 41mm
M2502W1
Watch S5 46mm
M2530W1, M2517W1
Price
Watch S4 41mm
$ 196.42 / € 118.60
Watch S5 46mm
€ 179.37