The Amazfit T Rex 2 premium GPS smart watch is equipped with 1.39” HD AMOLED always-on display for clear & outstanding visibility while outdoors and it passed 15 Military-standard Tests (MIL-STD-810G) to withstand extreme temperatures and environments, and prove durability even when subjected to intense physical condition. The Amazfit T Rex 2 sports watch supports 5 satellite positioning systems(GPS/GLONASS/Galileo/BeiDou/QZSS), which can effectively reduce environmental interference and achieve more precise positioning. Hikers, climbers, and explorers of any fashion can also conquer new heights and discover new paths with the T-Rex 2's built-in compass and barometric altimeter. It also provides Route Import and Real-time Navigation. The Amazfit Tex 2 smart watch can automatically recognize the movements and count the reps of dozens of types of strength training exercises and help to create your own training templates. After finishing the workout, the Zepp App will visually show you the muscle group you exercised and assesses specialized data like maximum oxygen uptake (VO2Max), full recovery time, training load and training effect to help you get strength exercise more effective.