Screen size
Watch 51.4"
X300 UltraWinner: 6.8"+79%
Quick verdict
X300 Ultra leads the measured specs 17-3.
Measured wins
Watch 5
3
spec wins
Ties
3
equal specs
X300 Ultra
17
spec wins
Overall winner
Screen size
Technology
Watch 5
HSPA / LTE
X300 Ultra
GSM / HSPA / LTE / 5G
2G bands
Watch 5
N/A
X300 Ultra
GSM 850 / 900 / 1800 / 1900
3G bands
Watch 5
HSDPA 850 / 900 / 2100
X300 Ultra
HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands
Watch 5
LTE - cellular model only
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
equal specsSD card
equal specsStereo speakers
X300 Ultra
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 42, 43, 48, 66
Speed
Watch 5
HSPA, LTE - cellular model only
X300 Ultra
HSPA, LTE, 5G
5G bands
Watch 5
-
X300 Ultra
1, 2, 3, 5, 7, 8, 12, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA
Announced
Watch 5
2025, April 21
X300 Ultra
2026, March 30
Status
Watch 5
Available. Released 2025, April 29
X300 Ultra
Available. Released 2026, April 03
Dimensions
Watch 5
45 x 45 x 11.4 mm (1.77 x 1.77 x 0.45 in)
X300 Ultra
163 x 76.8 x 8.2 mm or 8.5 mm
Weight
Watch 5
32 g or 35 g (1.13 oz)
X300 Ultra
232 g or 237 g (8.18 oz)
Build
Watch 5
Glass front, aluminum alloy frame or Stainless steel frame
X300 Ultra
Glass front, glass back, aluminum frame
SIM
Watch 5
eSIM - cellular model only
X300 Ultra
· Nano-SIM + Nano-SIM + eSIM (max 2 at a time) - International· Nano-SIM + Nano-SIM - China
Other
Watch 5
5ATM water resistant Compatible with standard 22mm straps (Stainless steel model only)
X300 Ultra
IP68/IP69 dust tight and water resistant (immersible up to 1.5m for 30 min)
Type
Watch 5
AMOLED, 1500 nits (peak)
X300 Ultra
LTPO AMOLED, 1B colors, 144Hz, 2160Hz PWM, Dolby Vision, HDR10+, HDR Vivid
Size
Watch 5
1.43 inches
X300 Ultra
6.82 inches, 113.0 cm2 (~90.3% screen-to-body ratio)
Resolution
Watch 5
466 x 466 pixels (~326 ppi density)
X300 Ultra
1440 x 3168 pixels (~510 ppi density)
Protection
Watch 5
-
X300 Ultra
Armor glass, Mohs level 4
Other
Watch 5
-
X300 Ultra
Ultra HDR image support
OS
Watch 5
Blue OS 2
X300 Ultra
Android 16, OriginOS 6
Chipset
Watch 5
-
X300 Ultra
Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
CPU
Watch 5
-
X300 Ultra
Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
GPU
Watch 5
-
X300 Ultra
Adreno 840
Card slot
Watch 5
No
X300 Ultra
No
Internal
Watch 5
-
X300 Ultra
256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
Watch 5
-
X300 Ultra
UFS 4.1
Other
Watch 5
No
X300 Ultra
-
Loudspeaker
Watch 5
No
X300 Ultra
Yes, with stereo speakers
3.5mm jack
Watch 5
No
X300 Ultra
No
Other
Watch 5
-
X300 Ultra
24-bit/192kHz Hi-Res audio
WLAN
Watch 5
No
X300 Ultra
Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band
Bluetooth
Watch 5
5.4, A2DP, LE
X300 Ultra
5.4, A2DP, LE, aptX HD, aptX Adaptive, aptX Lossless, LHDC 5
Positioning
Watch 5
GPS, GLONASS, GALILEO, BDS, QZSS
X300 Ultra
GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), GLONASS
NFC
Watch 5
Yes
X300 Ultra
Yes
Radio
Watch 5
No
X300 Ultra
No
USB
Watch 5
No
X300 Ultra
USB Type-C 3.2, OTG, DisplayPort
Infrared port
Watch 5
-
X300 Ultra
Yes
Sensors
Watch 5
Accelerometer, gyro, heart rate, compass, SpO2
X300 Ultra
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Other
Watch 5
-
X300 Ultra
Emergency SOS via satellite (calls, messages) - 16GB + 1TB model only
Type
Watch 5
505 mAh
X300 Ultra
Si/C Li-Ion 6600 mAh (International) or 6400 mAh (Europe)
Charging
Watch 5
-
X300 Ultra
100W wired, PD, PPS, QC, UFCS 40W wireless Reverse wired Reverse wireless
Colors
Watch 5
Black, White, Stainless steel silver
X300 Ultra
Black, Silver, Green
Price
Watch 5
About 100 EUR
X300 Ultra
€ 1,999.00
Models
Watch 5
-
X300 Ultra
V2547A, V2547DA, V2536A, V2562
Triple
Watch 5
-
X300 Ultra
200 MP, f/1.9, 35mm (wide), 1/1.12", 0.7µm, PDAF, gimbal OIS 200 MP, f/2.7, 85mm (periscope telephoto), 1/1.4", 0.56µm, multi-directional PDAF, OIS, 3.7x optical zoom, macro 3.4:1 50 MP, f/2.0, 14mm, 116˚ (ultrawide), 1/1.28", 1.22µm, dual pixel PDAF, OIS Optional add-on zoom lenses: 200mm, 2.35x optical zoom, OIS, Zeiss optics 400mm, 4.7x optical zoom, OIS, Zeiss optics
Features
Watch 5
-
X300 Ultra
Laser AF, color spectrum sensor, Zeiss optics, Zeiss T* lens coating, LED flash, panorama, HDR, 3D LUT import
Video
Watch 5
-
X300 Ultra
8K@30fps, 4K@24/30/60/120fps (10-bit Log, Dolby Vision HDR), 1080p@30/60/120/240fps, gyro-EIS, HDR10+
Single
Watch 5
-
X300 Ultra
50 MP, f/2.5, 24mm (wide), 1/2.76", 0.64µm, AF
Features
Watch 5
-
X300 Ultra
HDR
Video
Watch 5
-
X300 Ultra
4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR