1.4 inch TFT screen with square display and a full touch interface, Dafit App, 170mAh Lithium Polymer rechargeable battery, IP67 Waterproof. Health measurements: Dynamic & continuous heart rate, blood pressure, blood oxygen & Sleep monitoring. NOTE: This data is only for your reference to adjust your exercise and NOT for medical purposes. Fitness Features: Steps, calorie count, Distance, Sleep monitoring, sedentary reminders, alarms, stopwatch. Inbuilt sports modes - running, cycling,football,rope skipping. Other Features: stopwatch, quick charge, ultra-low power consumption, vibration, remote photography, music control, smart alarm, weather forecast etc Special Features: Apple Health integration, GPS trajectory for outdoor running with pace(app based),customisable watch face & Sleep quality Score.