Amazfit T-Rex Ultra 2 / Google Pixel Watch 4 (41 mm, Wi-Fi)

Amazfit T-Rex Ultra 2: A2550 · 51 mm · Black Magma · silicone strap

Google Pixel Watch 4 (41 mm, Wi-Fi): 41 mm Wi-Fi (GA10840-US) · Polished Silver aluminium case

Specification	Amazfit T-Rex Ultra 2	Google Pixel Watch 4 (41 mm, Wi-Fi)
Release year	2026	2025
Announcement / availability	19 February 2026 Amazfit	—
Display	1.5-inch AMOLED · 480 × 480 · sapphire glass Amazfit	Curved Actua 360 AMOLED LTPO; 320 ppi; DCI-P3; always-on display GIGAZINE gives the 41 mm model's resolution as 426 × 426. Google
Peak brightness	Up to 3000 nits With auto brightness; unavailable in low-temperature mode or below 30% battery. Amazfit	—
Body	Polymer case; Grade 5 titanium bezel, buttons and back Amazfit	—
Size / weight	51 × 51 × 14.3 mm; 89.2 g with strap Thickness excludes heart-rate sensor base. Amazfit	—
Strap	26 mm silicone; 145–215 mm wrist Amazfit	—
Storage	64 GB total; up to 26.7 GB user space Amazfit	—
Positioning	Dual-band GNSS; six satellite systems Amazfit	—
Sensors	BioTracker 6.0 PPG; barometer, compass, motion and temperature sensors Amazfit	Optical heart rate, SpO2 (red/infrared), ECG-capable electrical sensors, skin conductance (cEDA), skin temperature, compass, altimeter, barometer, accelerometer, gyroscope, ambient light ECG and some health features may be limited by country; readings are not a medical diagnosis. Google
Battery	870 mAh; up to 30 typical / 15 heavy / 10 AOD days Separate manufacturer scenarios, not continuous GPS endurance. Amazfit	325 mAh typical; up to 30 hours with always-on display, up to 48 hours with Battery Saver The 45 mm model has a 455 mAh battery and up to 40 hours with the always-on display. Google
GPS battery modes	Up to 50 Accurate / 90 saving / 177 max-battery hours Amazfit	—
Wireless	Bluetooth 5.2 BLE; 2.4 GHz Wi-Fi Amazfit	—
Water / diving	10 ATM; recreational diving up to 45 m Not for technical, cave or mixed-gas diving. Amazfit	—
Phone connection	Android 7+ / iOS 15+; Zepp app Amazfit	—
Charging	Magnetic charging puck; USB-C cable separate Amazfit	Quick Charge Dock: about 50% in 15 minutes, 80% in 25 minutes, 100% in 45 minutes The watch sits in a new side-mounted dock; earlier Pixel Watch chargers do not fit this model. Google
Calls	Bluetooth calls using microphone/speaker Amazfit	—
Case	—	41 mm, 100% recycled aluminium; 12.3 mm height Google
Weight	—	31.0 g (without band) The 45 mm model weighs 36.7 g. Google
Brightness and refresh	—	Up to 3000 nits peak; 1 nit minimum in always-on mode; 1–60 Hz The ability to drop to 1 Hz reduces the battery cost of the always-on display. Google
Display glass	—	Custom 3D Corning Gorilla Glass 5 Google
Processor	—	Qualcomm Snapdragon W5 Gen 2; Cortex-M55 co-processor The co-processor handles notifications and sensor work while the screen is off without waking the main processor, saving battery. Google
Memory and storage	—	2 GB SDRAM; 32 GB eMMC Google
Location	—	Dual-frequency GPS (GPS, Galileo, GLONASS) Google
Connectivity	—	Bluetooth 6.0; Wi-Fi 802.11 a/b/g/n/ac/ax (2.4 and 5 GHz); NFC; UWB This entry covers the Wi-Fi model; LTE and UMTS cellular connectivity is only on the LTE model. Google
Durability	—	5 ATM; IP68 5 ATM suits shallow-water activities like swimming, not diving or high-speed water sports. Google
Controls	—	Side button, haptic crown; Gen 3 Premium haptics Google
Audio	—	Built-in microphone and speaker Google
Operating system	—	Wear OS 6.0 Google
Compatibility	—	Android 11.0 or newer; Google Account and Pixel Watch app Some features depend on the phone's Android version and the Pixel Watch app. Google
Band fit	—	Small 130–175 mm, Large 165–210 mm wrist Google