Screen size
K15xWinner: 6.8"+72%
Watch 4 Pro1.9"
Quick verdict
K15x leads the measured specs 18-2.
Measured wins
K15x
18
spec wins
Overall winner
Ties
2
equal specs
Watch 4 Pro
2
spec wins
Screen size
Technology
K15x
GSM / HSPA / LTE / 5G
Watch 4 Pro
HSPA / LTE
2G bands
K15x
GSM 850 / 900 / 1800 / 1900
Watch 4 Pro
N/A
3G bands
K15x
HSDPA 850 / 900 / 2100
Watch 4 Pro
HSDPA 850 / 900 / 2100
4G bands
K15x
1, 3, 5, 8, 28, 34, 38, 39, 40, 41
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
SD card
Stereo speakers
Watch 4 Pro
LTE
5G bands
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
Watch 4 Pro
-
Speed
K15x
HSPA, LTE, 5G
Watch 4 Pro
HSPA, LTE
Announced
K15x
2026, October 02
Watch 4 Pro
2023, August 29
Status
K15x
Available. Released 2026, October 02
Watch 4 Pro
Available. Released 2023, September 08
Dimensions
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Watch 4 Pro
50.1 x 38.3 x 12.9 mm (1.97 x 1.51 x 0.51 in)
Weight
K15x
212 g (7.48 oz)
Watch 4 Pro
52.3 g (1.83 oz)
Build
K15x
Glass front, plastic frame, plastic back
Watch 4 Pro
Glass front, stainless steel frame
SIM
K15x
Nano-SIM + Nano-SIM
Watch 4 Pro
eSIM (market/region dependent)
Other
K15x
IP64 dust tight and water resistant (water splashes)
Watch 4 Pro
5ATM water resistant ECG certified
Type
K15x
IPS LCD, 120Hz, 1125 nits (peak)
Watch 4 Pro
LTPO AMOLED
Size
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Watch 4 Pro
1.91 inches
Resolution
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
Watch 4 Pro
378 x 496 pixels (~327 ppi density)
OS
K15x
Android 16, ColorOS 16
Watch 4 Pro
ColorOS Watch 3.0 - China
Chipset
K15x
Mediatek Dimensity 6300 (6 nm)
Watch 4 Pro
Qualcomm Snapdragon W5+ Gen 1 (4 nm)
CPU
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
Watch 4 Pro
Quad-core 1.7 GHz Cortex-A53
GPU
K15x
Mali-G57 MC2
Watch 4 Pro
Adreno A702
Card slot
K15x
microSDXC
Watch 4 Pro
No
Internal
K15x
128GB 6GB RAM, 256GB 6GB RAM
Watch 4 Pro
32GB 2GB RAM
Other
K15x
UFS 2.2
Watch 4 Pro
-
Dual
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
Watch 4 Pro
-
Features
K15x
LED flash, HDR, panorama
Watch 4 Pro
-
Video
K15x
1080p@30/60fps
Watch 4 Pro
-
Single
K15x
5 MP, f/2.2, 27mm (wide)
Watch 4 Pro
-
Features
K15x
Panorama
Watch 4 Pro
-
Video
K15x
1080p@30fps
Watch 4 Pro
-
Loudspeaker
K15x
Yes
Watch 4 Pro
Yes
3.5mm jack
K15x
Yes
Watch 4 Pro
No
WLAN
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Watch 4 Pro
Wi-Fi 802.11 a/b/g/n
Bluetooth
K15x
5.4, A2DP, LE, aptX HD
Watch 4 Pro
5.0, A2DP, LE
Positioning
K15x
GPS, GALILEO, GLONASS, QZSS
Watch 4 Pro
GPS, GLONASS, BDS, GALILEO, QZSS
NFC
K15x
Yes
Watch 4 Pro
Yes
Radio
K15x
No
Watch 4 Pro
No
USB
K15x
USB Type-C 2.0, OTG
Watch 4 Pro
No
Sensors
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
Watch 4 Pro
Accelerometer, gyro, heart rate, compass, barometer, SpO2, thermometer (skin temperature)
Other
K15x
-
Watch 4 Pro
Temperature sensing (0.1˚ accuracy)
Type
K15x
6500 mAh
Watch 4 Pro
Li-Ion 570 mAh
Charging
K15x
45W wired 5W reverse wired
Watch 4 Pro
-
Colors
K15x
Purple, White
Watch 4 Pro
Black, Silver
Models
K15x
PLT150
Watch 4 Pro
-
Price
K15x
About 230 EUR
Watch 4 Pro
About 290 EUR
Other
K15x
-
Watch 4 Pro
No