Screen size
A6s ProWinner: 6.6"+71%
Watch 4 Pro1.9"
Quick verdict
A6s Pro leads the measured specs 18-1.
Measured wins
A6s Pro
18
spec wins
Overall winner
Ties
4
equal specs
Watch 4 Pro
1
spec wins
Screen size
Technology
A6s Pro
GSM / HSPA / LTE
Watch 4 Pro
HSPA / LTE
2G bands
A6s Pro
GSM 850 / 900 / 1800 / 1900
Watch 4 Pro
N/A
3G bands
A6s Pro
HSDPA 850 / 900 / 2100
Watch 4 Pro
HSDPA 850 / 900 / 2100
4G bands
A6s Pro
LTE
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
equal specsUSB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
Stereo speakers
Watch 4 Pro
LTE
Speed
A6s Pro
HSPA, LTE
Watch 4 Pro
HSPA, LTE
Announced
A6s Pro
2026, February 24
Watch 4 Pro
2023, August 29
Status
A6s Pro
Available. Released 2026, March 03
Watch 4 Pro
Available. Released 2023, September 08
Dimensions
A6s Pro
158.2 x 75 x 8 mm (6.23 x 2.95 x 0.31 in)
Watch 4 Pro
50.1 x 38.3 x 12.9 mm (1.97 x 1.51 x 0.51 in)
Weight
A6s Pro
190 g (6.70 oz)
Watch 4 Pro
52.3 g (1.83 oz)
Build
A6s Pro
Glass front, plastic frame, plastic back
Watch 4 Pro
Glass front, stainless steel frame
SIM
A6s Pro
Nano-SIM + Nano-SIM
Watch 4 Pro
eSIM (market/region dependent)
Other
A6s Pro
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Watch 4 Pro
5ATM water resistant ECG certified
Type
A6s Pro
AMOLED, 1B colors, 120Hz, 600 nits (typ), 1400 nits (HBM)
Watch 4 Pro
LTPO AMOLED
Size
A6s Pro
6.57 inches, 105.0 cm2 (~88.5% screen-to-body ratio)
Watch 4 Pro
1.91 inches
Resolution
A6s Pro
1080 x 2372 pixels (~397 ppi density)
Watch 4 Pro
378 x 496 pixels (~327 ppi density)
Protection
A6s Pro
AGC DT-Star D+
Watch 4 Pro
-
OS
A6s Pro
Android 16, ColorOS 16
Watch 4 Pro
ColorOS Watch 3.0 - China
Chipset
A6s Pro
Mediatek Helio G100 Max (6 nm)
Watch 4 Pro
Qualcomm Snapdragon W5+ Gen 1 (4 nm)
CPU
A6s Pro
Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
Watch 4 Pro
Quad-core 1.7 GHz Cortex-A53
GPU
A6s Pro
Mali-G57 MC2
Watch 4 Pro
Adreno A702
Card slot
A6s Pro
microSDXC
Watch 4 Pro
No
Internal
A6s Pro
256GB 8GB RAM
Watch 4 Pro
32GB 2GB RAM
Other
A6s Pro
UFS 2.2
Watch 4 Pro
-
Dual
A6s Pro
50 MP, f/1.8, (wide), PDAF Auxiliary lens
Watch 4 Pro
-
Features
A6s Pro
LED flash, HDR, panorama
Watch 4 Pro
-
Video
A6s Pro
1080p@30/60/120fps
Watch 4 Pro
-
Single
A6s Pro
50 MP, (wide)
Watch 4 Pro
-
Features
A6s Pro
Panorama
Watch 4 Pro
-
Video
A6s Pro
1080p@30fps
Watch 4 Pro
-
Loudspeaker
A6s Pro
Yes, with stereo speakers
Watch 4 Pro
Yes
3.5mm jack
A6s Pro
No
Watch 4 Pro
No
WLAN
A6s Pro
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Watch 4 Pro
Wi-Fi 802.11 a/b/g/n
Bluetooth
A6s Pro
5.4, A2DP, LE, aptX HD
Watch 4 Pro
5.0, A2DP, LE
Positioning
A6s Pro
GPS, GALILEO, GLONASS, BDS, QZSS
Watch 4 Pro
GPS, GLONASS, BDS, GALILEO, QZSS
NFC
A6s Pro
Yes (market/region dependent)
Watch 4 Pro
Yes
Radio
A6s Pro
Unspecified
Watch 4 Pro
No
USB
A6s Pro
USB Type-C 2.0, OTG
Watch 4 Pro
No
Sensors
A6s Pro
Fingerprint (under display, optical), accelerometer, gyro, proximity
Watch 4 Pro
Accelerometer, gyro, heart rate, compass, barometer, SpO2, thermometer (skin temperature)
Other
A6s Pro
-
Watch 4 Pro
Temperature sensing (0.1˚ accuracy)
Type
A6s Pro
Si/C Li-Ion 7000 mAh
Watch 4 Pro
Li-Ion 570 mAh
Charging
A6s Pro
80W wired, 33W PPS, 13.5W PD 5W reverse wired
Watch 4 Pro
-
Colors
A6s Pro
Lumina Frost, Eclipse Blue
Watch 4 Pro
Black, Silver
Price
A6s Pro
About 280 EUR
Watch 4 Pro
About 290 EUR
Other
A6s Pro
-
Watch 4 Pro
No