Screen size
Poco C81 ProWinner: 6.9"+79%
Watch S11.4"
Quick verdict
Poco C81 Pro leads the measured specs 16-3.
Measured wins
Poco C81 Pro
16
spec wins
Overall winner
Ties
2
equal specs
Watch S1
3
spec wins
Screen size
Technology
Poco C81 Pro
GSM / HSPA / LTE
Watch S1
No cellular connectivity
2G bands
Poco C81 Pro
GSM 900 / 1800 / 1900
Watch S1
N/A
3G bands
Poco C81 Pro
HSDPA 850 / 900 / 2100 - International, HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LATAM
Watch S1
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 S1
N/A
Speed
Poco C81 Pro
HSPA, LTE
Watch S1
No
GPRS
Poco C81 Pro
-
Watch S1
No
EDGE
Poco C81 Pro
-
Watch S1
No
Announced
Poco C81 Pro
2026, April 27
Watch S1
2021, December 28
Status
Poco C81 Pro
Available. Released 2026, April 27
Watch S1
Available. Released 2021, December 31
Dimensions
Poco C81 Pro
171.6 x 79.5 x 8.2 mm (6.76 x 3.13 x 0.32 in)
Watch S1
46.5 x 46.5 x 11 mm (1.83 x 1.83 x 0.43 in)
Weight
Poco C81 Pro
208 g (7.34 oz)
Watch S1
53 g (1.87 oz)
Build
Poco C81 Pro
Glass front, plastic frame, plastic back
Watch S1
Sapphire crystal front, stainless steel frame, plastic back
SIM
Poco C81 Pro
Nano-SIM + Nano-SIM
Watch S1
No
Other
Poco C81 Pro
-
Watch S1
Waterproof (5ATM)
Type
Poco C81 Pro
IPS LCD, 120Hz, 650 nits (typ), 800 nits (peak)
Watch S1
AMOLED
Size
Poco C81 Pro
6.9 inches, 114.9 cm2 (~84.3% screen-to-body ratio)
Watch S1
1.43 inches
Resolution
Poco C81 Pro
720 x 1600 pixels, 20:9 ratio (~254 ppi density)
Watch S1
466 x 466 pixels (~326 ppi density)
OS
Poco C81 Pro
Android 15, up to 4 major Android upgrades, HyperOS 3
Watch S1
Proprietary OS
Chipset
Poco C81 Pro
Unisoc T7250 (12 nm)
Watch S1
-
CPU
Poco C81 Pro
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
Watch S1
-
GPU
Poco C81 Pro
Mali-G57 MP1
Watch S1
-
Card slot
Poco C81 Pro
microSDXC (dedicated slot)
Watch S1
No
Internal
Poco C81 Pro
64GB 4GB RAM, 128GB 4GB RAM, 256GB 4GB RAM
Watch S1
Unspecified storage
Other
Poco C81 Pro
UFS 2.2
Watch S1
-
Single
Poco C81 Pro
13 MP, f/2.2, (wide), 1/3.06"
Watch S1
-
Features
Poco C81 Pro
LED flash, HDR
Watch S1
-
Video
Poco C81 Pro
1080p@30fps
Watch S1
-
Single
Poco C81 Pro
8 MP, f/2.0, (wide)
Watch S1
-
Features
Poco C81 Pro
HDR
Watch S1
-
Video
Poco C81 Pro
1080p@30fps
Watch S1
-
Loudspeaker
Poco C81 Pro
Yes
Watch S1
Yes
3.5mm jack
Poco C81 Pro
Yes
Watch S1
No
WLAN
Poco C81 Pro
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Watch S1
Wi-Fi 802.11 b/g/n (China only)
Bluetooth
Poco C81 Pro
5.2, A2DP, LE
Watch S1
5.2, A2DP, LE
Positioning
Poco C81 Pro
GPS, GALILEO, GLONASS, BDS
Watch S1
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
Poco C81 Pro
Yes (market/region dependent)
Watch S1
Yes
Radio
Poco C81 Pro
FM radio
Watch S1
No
USB
Poco C81 Pro
USB Type-C 2.0
Watch S1
No
Sensors
Poco C81 Pro
Fingerprint (side-mounted), accelerometer, compass
Watch S1
Accelerometer, gyro, compass, barometer, heart rate, SpO2
Other
Poco C81 Pro
Virtual proximity sensing
Watch S1
-
Type
Poco C81 Pro
6000 mAh
Watch S1
Li-Po 470 mAh
Charging
Poco C81 Pro
15W wired 7.5W reverse wired
Watch S1
Wireless
Colors
Poco C81 Pro
Black, Gold, Green
Watch S1
Black, Silver
Price
Poco C81 Pro
About 120 EUR
Watch S1
About 270 EUR
Models
Poco C81 Pro
-
Watch S1
M2108W1
Other
Poco C81 Pro
-
Watch S1
No