Amazfit GTS Smartwatch Fitness and Activities Tracker with Built-in GPS,5ATM Waterproof,Heart Rate, Music, Smart Notificatons(Black) Modern Active & Fashion squared design, always ready for any occasion.The Amazfit GTS comes with a large 1.65” Retina-grade AMOLED display for outstanding and more comfortable viewing experience. Use 24/7 heart rate tracking to better track calorie burn, optimise effort during workouts, see your resting heart rate trends and cardio fitness level in the Amazfit app. Live connected – stay informed all day long with smart notifications and custom vibrations for your favorite apps like email, text, Facebook, etc. Smart sports tracking-includes smart Sport tracking technology that allows you to record 12 different sports and fitness activities including running, cycling, swimming, mountaineering…GPS + GLONASS will accurately track your routes. Long battery life has always been a unique feature for the Amazfit brand, and the Verge is no exception – with a 14-day average run time on a single charge.