Heart Rate Watch with Step Calorie Tracker and Sleep Monitor for Sports Gym Running Workout No need to carry a cell phone any more when you at sporting, this wristband can display and storage date, time, heart rate, step and calorie counter informations alone Inbuilt high precision heart rate sensor, accurately recording your heart rate Supports various sports record management: walking, running, cycling and climbing etc Bluetooth 4.0, fits above iOS 7 and Android 4.3 version Mute vibration alarm will wake you up and won't disturb others in the morning