Screen size
K15sWinner: 6.6"+71%
Watch 4 Pro1.9"
Quick verdict
K15s leads the measured specs 18-1.
Measured wins
K15s
18
spec wins
Overall winner
Ties
3
equal specs
Watch 4 Pro
1
spec wins
Screen size
Technology
K15s
GSM / HSPA / LTE / 5G
Watch 4 Pro
HSPA / LTE
2G bands
K15s
GSM 850 / 900 / 1800 / 1900
Watch 4 Pro
N/A
3G bands
K15s
HSDPA 850 / 900 / 2100
Watch 4 Pro
HSDPA 850 / 900 / 2100
4G bands
K15s
1, 3, 5, 8, 28, 34, 38, 39, 40, 41, 42, 48
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
NFC
equal specs3.5mm jack
equal specsSD card
Stereo speakers
Watch 4 Pro
LTE
5G bands
K15s
1, 3, 5, 8, 28, 38, 40, 41, 48, 77, 78 SA/NSA
Watch 4 Pro
-
Speed
K15s
HSPA, LTE, 5G
Watch 4 Pro
HSPA, LTE
Announced
K15s
2026, October 02
Watch 4 Pro
2023, August 29
Status
K15s
Available. Released 2026, October 02
Watch 4 Pro
Available. Released 2023, September 08
Dimensions
K15s
159.1 x 75.8 x 8.8 mm (6.26 x 2.98 x 0.35 in)
Watch 4 Pro
50.1 x 38.3 x 12.9 mm (1.97 x 1.51 x 0.51 in)
Weight
K15s
205 g (7.23 oz)
Watch 4 Pro
52.3 g (1.83 oz)
Build
K15s
Glass front, plastic frame, plastic back
Watch 4 Pro
Glass front, stainless steel frame
SIM
K15s
Nano-SIM + Nano-SIM
Watch 4 Pro
eSIM (market/region dependent)
Other
K15s
IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Drop resistant up to 1.8m
Watch 4 Pro
5ATM water resistant ECG certified
Type
K15s
AMOLED, 1B colors, 120Hz, 800 nits (typ), 1400 nits (peak)
Watch 4 Pro
LTPO AMOLED
Size
K15s
6.57 inches, 105.0 cm2 (~87.1% screen-to-body ratio)
Watch 4 Pro
1.91 inches
Resolution
K15s
1080 x 2372 pixels (~397 ppi density)
Watch 4 Pro
378 x 496 pixels (~327 ppi density)
OS
K15s
Android 16, ColorOS 16
Watch 4 Pro
ColorOS Watch 3.0 - China
Chipset
K15s
Mediatek Dimensity 6360 Max (6 nm)
Watch 4 Pro
Qualcomm Snapdragon W5+ Gen 1 (4 nm)
CPU
K15s
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
Watch 4 Pro
Quad-core 1.7 GHz Cortex-A53
GPU
K15s
Mali-G57 MC2
Watch 4 Pro
Adreno A702
Card slot
K15s
microSDXC
Watch 4 Pro
No
Internal
K15s
128GB 6GB RAM, 256GB 8GB RAM
Watch 4 Pro
32GB 2GB RAM
Other
K15s
UFS 2.2
Watch 4 Pro
-
Dual
K15s
50 MP, f/1.9, 25mm (wide), PDAF Auxiliary lens
Watch 4 Pro
-
Features
K15s
LED flash, HDR, panorama
Watch 4 Pro
-
Video
K15s
1080p@30/60fps
Watch 4 Pro
-
Single
K15s
8 MP, f/2.1, 25mm (wide)
Watch 4 Pro
-
Features
K15s
Panorama
Watch 4 Pro
-
Video
K15s
1080p@30fps
Watch 4 Pro
-
Loudspeaker
K15s
Yes
Watch 4 Pro
Yes
3.5mm jack
K15s
No
Watch 4 Pro
No
WLAN
K15s
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Watch 4 Pro
Wi-Fi 802.11 a/b/g/n
Bluetooth
K15s
5.4, A2DP, LE, aptX HD
Watch 4 Pro
5.0, A2DP, LE
Positioning
K15s
GPS, GALILEO, GLONASS, BDS, QZSS
Watch 4 Pro
GPS, GLONASS, BDS, GALILEO, QZSS
NFC
K15s
Yes
Watch 4 Pro
Yes
Infrared port
K15s
Yes
Watch 4 Pro
-
Radio
K15s
No
Watch 4 Pro
No
USB
K15s
USB Type-C 2.0, OTG
Watch 4 Pro
No
Sensors
K15s
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Watch 4 Pro
Accelerometer, gyro, heart rate, compass, barometer, SpO2, thermometer (skin temperature)
Other
K15s
-
Watch 4 Pro
Temperature sensing (0.1˚ accuracy)
Type
K15s
Si/C Li-Ion 8000 mAh
Watch 4 Pro
Li-Ion 570 mAh
Charging
K15s
45W wired, 45W UFCS, 45W PPS, 13.5W PD Reverse wired
Watch 4 Pro
-
Colors
K15s
Gray, Purple
Watch 4 Pro
Black, Silver
Models
K15s
PYE130
Watch 4 Pro
-
Price
K15s
About 270 EUR
Watch 4 Pro
About 290 EUR
Other
K15s
-
Watch 4 Pro
No