Smartwatch – with direct wrist pulse measurement, Fitbit Pay, calories burned, distance covered, speed, floors climbed, interval training, altimeter, gyroscope,, thermometer, sensor for light intensity, oximeter, connection through WiFi and Bluetooth, plays music, vibration, phone search, calling Date, Stopwatch, Alarm clock, Day of the week, Lighting, Calendar, 24-hour mode and Date indicator, water resistant up to 50 m (5 ATM), Fitbit OS, compatible with iOS, Android and Windows,