Amazfit T-Rex Ultra 2 Rugged Outdoor Smartwatch 51mm

Military-Grade Titanium and Sapphire Crystal Build

Built to survive extreme conditions, the watch chassis incorporates a Grade 5 titanium bezel paired with a scratch-resistant sapphire crystal glass screen. Certified to MIL-STD-810H standards for shock, heat, and freezing resistance, it features mud-resistant physical buttons that operate smoothly even when wearing thick winter gloves.

Ultra-Bright 3,000-Nit AMOLED Display

Featuring a 1.5-inch high-resolution AMOLED display capable of reaching up to 3,000 nits peak brightness, map routes and vital metrics remain crystal clear in harsh, direct sunlight. The display supports Always-On Display (AOD) modes, a dedicated night-vision red light mode, and adjustable haptic feedback.

Dual-Band L1+L5 GPS and Offline Topo Maps

Equipped with a circularly-polarized dual-band GPS system supporting 6 satellite constellations, the watch ensures sub-meter tracking accuracy in dense forests, deep valleys, and urban canyons. It supports full offline color topographic maps, contour overlays, turn-by-turn route navigation, and automatic return-to-start guidance directly from your wrist.

30 ATM Water Resistance and Freediving Mode

Rated for an extraordinary 30 ATM (300-meter) water resistance, the T-Rex Ultra 2 is certified for high-impact water sports and technical deep diving. Its specialized freediving mode tracks depth, ascent rates, bottom time, and water temperature in real time, serving as a dedicated dive computer.

Advanced BioTracker 6.0 and Zepp Coach 2.0

Powered by the upgraded BioTracker 6.0 PPG biometric sensor, the watch continuously monitors heart rate, blood oxygen ($SpO_2$), stress, and skin temperature. Integrated with Zepp Coach 2.0 AI, it delivers dynamic training plans, real-time stamina management, and post-workout recovery insights based on your physiological load.

Extended 25-Day Battery Life and Low-Temperature Operation

Designed for long-haul expeditions without access to power outlets, the high-density battery delivers up to 25 days of typical usage or up to 45 hours of continuous dual-band GPS tracking. Specially engineered battery circuitry allows the watch to maintain core GPS and sensor functions even in sub-zero temperatures as low as -30°C.