Amazfit T-Rex Ultra 2 / Samsung Galaxy Watch5 Pro 45 mm

Sapphire crystal resists scratches better than mineral and aluminosilicate glass; the raised bezel around the screen protects the glass from knocks.

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

Thickness excludes heart-rate sensor base.

Bioelectrical impedance analysis estimates values such as body fat and skeletal muscle; results are not for medical diagnosis.

Separate manufacturer scenarios, not continuous GPS endurance.

Not for technical, cave or mixed-gas diving.

The D-Buckle band uses a folding clasp so the strap sits at the same point every time, in place of a standard pin buckle.

Samsung says the battery is 60% larger than the Galaxy Watch4’s.

Wear OS 3 and later do not work with iPhone. Blood pressure and ECG work only in markets supported by Samsung Health Monitor and with Galaxy phones.

Track Back follows the recorded path in reverse to help you return to the start.

5ATM covers surface water activities such as swimming, not diving or high-pressure water. MIL-STD-810H is a set of military test methods, not a guarantee of impact resistance.