Screen size
Poco C81 ProWinner: 6.9"+79%
Watch S21.4"
Quick verdict
Poco C81 Pro leads the measured specs 17-2.
Measured wins
Poco C81 Pro
17
spec wins
Overall winner
Ties
2
equal specs
Watch S2
2
spec wins
Screen size
Technology
Poco C81 Pro
GSM / HSPA / LTE
Watch S2
No cellular connectivity
2G bands
Poco C81 Pro
GSM 900 / 1800 / 1900
Watch S2
N/A
3G bands
Poco C81 Pro
HSDPA 850 / 900 / 2100 - International, HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LATAM
Watch S2
N/A
4G bands
Poco C81 Pro
1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - International, 1, 2, 3, 4, 5, 7, 8, 13, 18, 19, 26, 28, 38, 40, 41, 66 - LATAM
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
SD card
Stereo speakers
Watch S2
N/A
Speed
Poco C81 Pro
HSPA, LTE
Watch S2
No
GPRS
Poco C81 Pro
-
Watch S2
No
EDGE
Poco C81 Pro
-
Watch S2
No
Announced
Poco C81 Pro
2026, April 27
Watch S2
2022, December 11
Status
Poco C81 Pro
Available. Released 2026, April 27
Watch S2
Available. Released 2022, December 11
Dimensions
Poco C81 Pro
171.6 x 79.5 x 8.2 mm (6.76 x 3.13 x 0.32 in)
Watch S2
46 x 46 x 10.7 mm (1.81 x 1.81 x 0.42 in)
Weight
Poco C81 Pro
208 g (7.34 oz)
Watch S2
-
Build
Poco C81 Pro
Glass front, plastic frame, plastic back
Watch S2
Sapphire crystal front, stainless steel frame
SIM
Poco C81 Pro
Nano-SIM + Nano-SIM
Watch S2
No
Other
Poco C81 Pro
-
Watch S2
Waterproof (5ATM)
Type
Poco C81 Pro
IPS LCD, 120Hz, 650 nits (typ), 800 nits (peak)
Watch S2
AMOLED
Size
Poco C81 Pro
6.9 inches, 114.9 cm2 (~84.3% screen-to-body ratio)
Watch S2
1.43 inches
Resolution
Poco C81 Pro
720 x 1600 pixels, 20:9 ratio (~254 ppi density)
Watch S2
466 x 466 pixels (~326 ppi density)
OS
Poco C81 Pro
Android 15, up to 4 major Android upgrades, HyperOS 3
Watch S2
Proprietary OS
Chipset
Poco C81 Pro
Unisoc T7250 (12 nm)
Watch S2
-
CPU
Poco C81 Pro
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
Watch S2
-
GPU
Poco C81 Pro
Mali-G57 MP1
Watch S2
-
Card slot
Poco C81 Pro
microSDXC (dedicated slot)
Watch S2
No
Internal
Poco C81 Pro
64GB 4GB RAM, 128GB 4GB RAM, 256GB 4GB RAM
Watch S2
-
Other
Poco C81 Pro
UFS 2.2
Watch S2
-
Single
Poco C81 Pro
13 MP, f/2.2, (wide), 1/3.06"
Watch S2
-
Features
Poco C81 Pro
LED flash, HDR
Watch S2
-
Video
Poco C81 Pro
1080p@30fps
Watch S2
-
Single
Poco C81 Pro
8 MP, f/2.0, (wide)
Watch S2
-
Features
Poco C81 Pro
HDR
Watch S2
-
Video
Poco C81 Pro
1080p@30fps
Watch S2
-
Loudspeaker
Poco C81 Pro
Yes
Watch S2
Yes
3.5mm jack
Poco C81 Pro
Yes
Watch S2
No
WLAN
Poco C81 Pro
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Watch S2
No
Bluetooth
Poco C81 Pro
5.2, A2DP, LE
Watch S2
5.2, A2DP, LE
Positioning
Poco C81 Pro
GPS, GALILEO, GLONASS, BDS
Watch S2
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Poco C81 Pro
Yes (market/region dependent)
Watch S2
Yes
Radio
Poco C81 Pro
FM radio
Watch S2
No
USB
Poco C81 Pro
USB Type-C 2.0
Watch S2
No
Sensors
Poco C81 Pro
Fingerprint (side-mounted), accelerometer, compass
Watch S2
Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature), body composition (BMI)
Other
Poco C81 Pro
Virtual proximity sensing
Watch S2
-
Type
Poco C81 Pro
6000 mAh
Watch S2
Li-Po 500 mAh
Charging
Poco C81 Pro
15W wired 7.5W reverse wired
Watch S2
Wireless
Colors
Poco C81 Pro
Black, Gold, Green
Watch S2
Black, Silver, Light Gold
Price
Poco C81 Pro
About 120 EUR
Watch S2
About 150 EUR
Other
Poco C81 Pro
-
Watch S2
No