Amazfit T-Rex Ultra 2 / Apple Watch SE 3 (44 mm, GPS)

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

Apple Watch SE 3 (44 mm, GPS): 44 mm GPS · aluminium case (Midnight / Starlight)

SpecificationAmazfit T-Rex Ultra 2Apple Watch SE 3 (44 mm, GPS)
Release year20262025
Announcement / availability19 February 2026 Amazfit—
Display1.5-inch AMOLED · 480 × 480 · sapphire glass AmazfitAlways-On Retina, LTPO OLED; 368 × 448 pixels, 977 mm², 326 ppi

Because the LTPO panel can lower its refresh rate, the display keeps showing the time and notifications with the wrist down; this is the first SE with Always-On.

Apple
Peak brightnessUp to 3000 nits

With auto brightness; unavailable in low-temperature mode or below 30% battery.

Amazfit		—
BodyPolymer case; Grade 5 titanium bezel, buttons and back Amazfit—
Size / weight51 × 51 × 14.3 mm; 89.2 g with strap

Thickness excludes heart-rate sensor base.

Amazfit		—
Strap26 mm silicone; 145–215 mm wrist Amazfit—
Storage64 GB total; up to 26.7 GB user space Amazfit64 GB Apple
PositioningDual-band GNSS; six satellite systems Amazfit—
SensorsBioTracker 6.0 PPG; barometer, compass, motion and temperature sensors AmazfitSecond-generation optical heart sensor, temperature sensor, compass, always-on altimeter, high-g accelerometer, high dynamic range gyroscope, ambient light sensor

There is no ECG or blood oxygen sensor. The temperature sensor is not intended for medical use.

Apple
Battery870 mAh; up to 30 typical / 15 heavy / 10 AOD days

Separate manufacturer scenarios, not continuous GPS endurance.

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GPS battery modesUp to 50 Accurate / 90 saving / 177 max-battery hours Amazfit—
WirelessBluetooth 5.2 BLE; 2.4 GHz Wi-Fi AmazfitWi-Fi 4 (802.11n, 2.4 GHz only); Bluetooth 5.3 Apple
Water / diving10 ATM; recreational diving up to 45 m

Not for technical, cave or mixed-gas diving.

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Phone connectionAndroid 7+ / iOS 15+; Zepp app Amazfit—
ChargingMagnetic charging puck; USB-C cable separate AmazfitFast charging: about 80% in 45 minutes; 15 minutes gives up to 8 hours of use

Times are with the included Apple Watch Magnetic Fast Charger to USB-C Cable; no adapter is included.

Apple
CallsBluetooth calls using microphone/speaker Amazfit—
Announcement—September 9, 2025; on sale from September 19, 2025 Apple
Case—44 mm aluminium; 44 × 38 × 10.7 mm

A 40 mm version also exists with different size, display and battery values.

Apple
Weight—32.9 g (GPS) Apple
Brightness—1,000 nits peak; 2 nits minimum Apple
Front glass—Ion-X glass

Apple claims 4x better crack resistance than the SE 2.

Apple
Processor—Apple S10 SiP; 64-bit dual-core processor, 4-core Neural Engine

The S10 enables the Always-On display, double tap and wrist flick gestures, on-device Siri and fast charging.

Apple
Health features—Heart rate and rhythm notifications, sleep apnoea notifications, sleep stages and sleep score, cycle tracking

Feature availability varies by country.

Apple
Gestures—Double tap; wrist flick (watchOS 26)

Wrist flick dismisses notifications and calls, silences alarms and returns to the watch face with one hand.

Apple
Speaker—Yes; can play music and podcasts Apple
Water resistance—50 metres (ISO 22810:2010); swimproof Apple
Location—L1 GPS, GLONASS, Galileo, QZSS, BeiDou

This is single-frequency (L1) GPS; position can drift under trees and between tall buildings.

Apple
Battery life—Up to 18 hours of normal use; up to 32 hours in Low Power Mode

In Apple's test the watch stays connected to an iPhone over Bluetooth throughout; results vary with use and settings.

Apple
Compatibility—iPhone 11 or later, iPhone SE (2nd generation) or later Apple
Colour options—Midnight or Starlight aluminium case Apple