Amazfit T-Rex Ultra 2 / Samsung Galaxy Watch6 Classic (47 mm)

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

Samsung Galaxy Watch6 Classic (47 mm): Galaxy Watch6 Classic 47 mm (2023); the Bluetooth version is SM-R960, and the LTE version is sold under a separate model code. The 43 mm Classic, the flat-bezel Galaxy Watch6 and the later Watch8 Classic are separate models.

SpecificationAmazfit T-Rex Ultra 2Samsung Galaxy Watch6 Classic (47 mm)
Release year20262023
Announcement / availability19 February 2026 Amazfit—
Display1.5-inch AMOLED · 480 × 480 · sapphire glass Amazfit1.5-inch (37.3 mm) Super AMOLED, 480 × 480 pixels; full-colour Always On Display; sapphire crystal glass

According to Samsung, the display is larger than on the Watch4 Classic and the rotating bezel is 15% thinner. Sapphire crystal resists scratches; the bezel partly surrounds the edge of the screen.

Samsung
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 Amazfit—
PositioningDual-band GNSS; six satellite systems Amazfit—
SensorsBioTracker 6.0 PPG; barometer, compass, motion and temperature sensors AmazfitSamsung BioActive Sensor (optical heart rate + electrical heart signal + bioelectrical impedance analysis), temperature, accelerometer, barometer, gyro, geomagnetic, light and 3D Hall sensor

Bioelectrical impedance analysis passes a weak current through the body when two fingers rest on the buttons to estimate muscle, fat and water; it should not be used with a pacemaker or during pregnancy. ECG and blood pressure work only in approved markets through Samsung Health Monitor.

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

Separate manufacturer scenarios, not continuous GPS endurance.

Amazfit		—
GPS battery modesUp to 50 Accurate / 90 saving / 177 max-battery hours Amazfit—
WirelessBluetooth 5.2 BLE; 2.4 GHz Wi-Fi Amazfit—
Water / diving10 ATM; recreational diving up to 45 m

Not for technical, cave or mixed-gas diving.

Amazfit		—
Phone connectionAndroid 7+ / iOS 15+; Zepp app Amazfit—
ChargingMagnetic charging puck; USB-C cable separate Amazfit—
CallsBluetooth calls using microphone/speaker Amazfit—
Rotating bezel—Physical rotating bezel; menu, notification and app control

Turning the bezel moves between notifications and tiles without touching the screen; its position is sensed by a 3D Hall sensor.

Samsung
Case—Stainless steel; quick-release band button Samsung
Processor, memory and storage—Exynos W930 dual-core 1.4 GHz; 2 GB memory, 16 GB storage Samsung
Battery and charging—425 mAh; up to 40 hours with Always On Display off, up to 30 hours with it on; WPC-based fast wireless charging

Samsung’s fast-charge testing used the magnetic fast-charging cable and a separately sold 25 W adapter. Battery life varies with network, usage and watch face.

Samsung
Operating system—Launched with Wear OS 4 (Wear OS Powered by Samsung) and One UI 5 Watch

Setup needs a phone with Google Mobile Services, Android 10 or later and more than 1.5 GB of memory; it does not work with an iPhone.

Samsung
Connectivity—Bluetooth 5.3, Wi‑Fi 2.4 + 5 GHz, NFC, GPS/GLONASS/BeiDou/Galileo

LTE is only on the LTE version; on the Bluetooth version internet and notifications come through the paired phone.

Samsung
Durability—5ATM + IP68, MIL-STD-810H

5ATM corresponds to 50 metres for 10 minutes; it is not suitable for diving or high-pressure water. IP68 covers 1.5 metres in fresh water for 30 minutes.

Samsung
Size and weight—46.5 × 46.5 × 10.9 mm; 59.0 g (without band)

Thickness is measured without the health sensors.

Samsung