Screen size
K15xWinner: 6.8"+78%
Watch X21.5"
Quick verdict
K15x leads the measured specs 16-5.
Measured wins
K15x
16
spec wins
Overall winner
Ties
1
equal specs
Watch X2
5
spec wins
Screen size
Technology
K15x
GSM / HSPA / LTE / 5G
Watch X2
No cellular connectivity
2G bands
K15x
GSM 850 / 900 / 1800 / 1900
Watch X2
N/A
3G bands
K15x
HSDPA 850 / 900 / 2100
Watch X2
N/A
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
USB
5G support
NFC
equal specs3.5mm jack
SD card
Stereo speakers
Watch X2
N/A
5G bands
K15x
1, 3, 5, 8, 28, 41, 48, 77, 78 SA/NSA
Watch X2
-
Speed
K15x
HSPA, LTE, 5G
Watch X2
No
GPRS
K15x
-
Watch X2
No
EDGE
K15x
-
Watch X2
No
Announced
K15x
2026, October 02
Watch X2
2025, February 20
Status
K15x
Available. Released 2026, October 02
Watch X2
Available. Released 2025, March 28
Dimensions
K15x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Watch X2
47.6 x 46.6 x 11.8 mm (1.87 x 1.83 x 0.46 in)
Weight
K15x
212 g (7.48 oz)
Watch X2
49.7 g (1.76 oz)
Build
K15x
Glass front, plastic frame, plastic back
Watch X2
Sapphire crystal front, stainless steel frame, plastic back
SIM
K15x
Nano-SIM + Nano-SIM
Watch X2
No
Other
K15x
IP64 dust tight and water resistant (water splashes)
Watch X2
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) MIL-STD-810H compliant Waterproof (5ATM/50m) Compatible with standard 22mm straps ECG certified
Type
K15x
IPS LCD, 120Hz, 1125 nits (peak)
Watch X2
LTPO AMOLED, 2200 nits (peak)
Size
K15x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Watch X2
1.5 inches
Resolution
K15x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
Watch X2
466 x 466 pixels (~310 ppi density)
Protection
K15x
-
Watch X2
Sapphire crystal glass
OS
K15x
Android 16, ColorOS 16
Watch X2
ColorOS Watch 7.0 + Wear OS 5.0
Chipset
K15x
Mediatek Dimensity 6300 (6 nm)
Watch X2
Qualcomm Snapdragon W5 Gen 1 (4 nm)
CPU
K15x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
Watch X2
-
GPU
K15x
Mali-G57 MC2
Watch X2
-
Card slot
K15x
microSDXC
Watch X2
No
Internal
K15x
128GB 6GB RAM, 256GB 6GB RAM
Watch X2
32GB 2GB RAM
Other
K15x
UFS 2.2
Watch X2
-
Dual
K15x
13 MP, f/2.2, 27mm (wide), AF Auxiliary lens
Watch X2
-
Features
K15x
LED flash, HDR, panorama
Watch X2
-
Video
K15x
1080p@30/60fps
Watch X2
-
Single
K15x
5 MP, f/2.2, 27mm (wide)
Watch X2
-
Features
K15x
Panorama
Watch X2
-
Video
K15x
1080p@30fps
Watch X2
-
Loudspeaker
K15x
Yes
Watch X2
Yes
3.5mm jack
K15x
Yes
Watch X2
No
WLAN
K15x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Watch X2
Wi-Fi 802.11 a/b/g/n, dual-band
Bluetooth
K15x
5.4, A2DP, LE, aptX HD
Watch X2
5.2, A2DP, LE
Positioning
K15x
GPS, GALILEO, GLONASS, QZSS
Watch X2
GPS (L1+L5), GLONASS, GALILEO, BDS, QZSS
NFC
K15x
Yes
Watch X2
Yes
Radio
K15x
No
Watch X2
No
USB
K15x
USB Type-C 2.0, OTG
Watch X2
No
Sensors
K15x
Fingerprint (side-mounted), accelerometer, proximity, compass
Watch X2
Accelerometer, gyro, barometer, compass, heart rate, SpO2, thermometer (skin temperature)
Type
K15x
6500 mAh
Watch X2
Li-Ion 648 mAh
Charging
K15x
45W wired 5W reverse wired
Watch X2
7.5W wired
Colors
K15x
Purple, White
Watch X2
Lava Black, Summit Blue
Models
K15x
PLT150
Watch X2
OPWWE251
Price
K15x
About 230 EUR
Watch X2
About 300 EUR
Other
K15x
-
Watch X2
No