Screen size
Watch S11.4"
Watch S5Winner: 1.5"+3.4%
Quick verdict
Watch S5 leads the measured specs 6-1.
Measured wins
Watch S1
1
spec wins
Ties
5
equal specs
Watch S5
6
spec wins
Overall winner
Screen size
Technology
Watch S1
No cellular connectivity
Watch S5
HSPA / LTE
2G bands
Watch S1
N/A
Watch S5
3G bands
Watch S1
N/A
Watch S5
HSDPA
4G bands
Watch S1
N/A
Watch S5
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
equal specsIP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
LTE
Speed
Watch S1
No
Watch S5
HSPA, LTE
GPRS
Watch S1
No
Watch S5
No
EDGE
Watch S1
No
Watch S5
No
Announced
Watch S1
2021, December 28
Watch S5
2026, May 28
Status
Watch S1
Available. Released 2021, December 31
Watch S5
Available. Released 2026, May 28
Dimensions
Watch S1
46.5 x 46.5 x 11 mm (1.83 x 1.83 x 0.43 in)
Watch S5
46 x 46 x 11 mm (1.81 x 1.81 x 0.43 in)
Weight
Watch S1
53 g (1.87 oz)
Watch S5
46 g (1.62 oz)
Build
Watch S1
Sapphire crystal front, stainless steel frame, plastic back
Watch S5
Glass front, stainless steel frame, stainless steel/ceramic/forged carbon bezel
SIM
Watch S1
No
Watch S5
eSIM (market/region dependent)
Other
Watch S1
Waterproof (5ATM)
Watch S5
Waterproof (5ATM)
Type
Watch S1
AMOLED
Watch S5
AMOLED, 1500 nits (HBM), 2500 nits (peak)
Size
Watch S1
1.43 inches
Watch S5
1.48 inches
Resolution
Watch S1
466 x 466 pixels (~326 ppi density)
Watch S5
480 x 480 pixels (~459 ppi density)
Protection
Watch S1
-
Watch S5
Drop-proof glass
OS
Watch S1
Proprietary OS
Watch S5
Xiaomi HyperOS 3
Card slot
Watch S1
No
Watch S5
No
Internal
Watch S1
Unspecified storage
Watch S5
-
Other
Watch S1
No
Watch S5
No
Loudspeaker
Watch S1
Yes
Watch S5
Yes
3.5mm jack
Watch S1
No
Watch S5
No
WLAN
Watch S1
Wi-Fi 802.11 b/g/n (China only)
Watch S5
No
Bluetooth
Watch S1
5.2, A2DP, LE
Watch S5
5.4, LE
Positioning
Watch S1
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
Watch S5
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Watch S1
Yes
Watch S5
Yes (market/region dependent)
Radio
Watch S1
No
Watch S5
No
USB
Watch S1
No
Watch S5
No
Sensors
Watch S1
Accelerometer, gyro, compass, barometer, heart rate, SpO2
Watch S5
Accelerometer, gyro, compass, barometer, heart rate, SpO2
Type
Watch S1
Li-Po 470 mAh
Watch S5
Li-Po 815 mAh
Charging
Watch S1
Wireless
Watch S5
-
Colors
Watch S1
Black, Silver
Watch S5
Black, Silver, Ceramic Blue, Jungle Green, Beige (eSIM)
Models
Watch S1
M2108W1
Watch S5
M2530W1, M2517W1
Price
Watch S1
About 270 EUR
Watch S5
About 180 EUR