3d Curved Design & Hd Amoled Screen: The Amazfit Gts 2 Is A Curved 1.65 Hd Amoled Screen, Covered In 3d Glass, Boasts A Crystal-clear 341ppi Pixel Density, The Bezel-less Design Naturally Transitions To The Aluminum Alloy Watch Body For An Enhanced Visual Aesthetic. Long 7-day Battery Life & Gps Built-in: The Gts 2 Is Equipped With A Powerful 246mah Battery That Can Last 7 Days, And Is Alwayseady To Escort You Wherever Your Exercise Takes You, And Can Go For 25 Hours With Continuous Gps To Map Your Workouts. 3gb Music Storage: Control Mobile Music Playback Via Bluetooth, And Transfer Your Favorite Songs To The Watch Through Your Mobile Phone With A Massive 3gb Local Music Storage. Put Your Wireless Headphones In, Your Phone Down, And Follow The Music. 12 Sports Modes & 5 Atm: Amazfit Gtr 2 Includes 12 Built-in Sports Modes And Is Waterproof To A Depth Of Up To 50 Meters. This Smartwatch Provides Useful Data Such As Distance, Speed, Heartate, Calories Burned, Etc. Making Your Workout More Efficient. All-round Health Tracking: Equipped With The Biotracker 2, The Second-generation Ppg Bio-tracking Optical Sensor, The Amazfit Gtr 2 Can Provide 24-hour Heartate Monitoring, Blood-oxygen Saturation Measurement, Sleep Quality Monitoring, And Stress Level Monitoring. Also Included Is The Pai Health Assessment System, Which Uses Algorithms To Convert All Of The Complex Health And Activity Data Into One Single Score, To Help You Understand Your Physical State At A Glance.