Highlights : Compatible system : Android and ios Bluetooth : 4.0 Heart rate monitoring Distance track Pedometer Sleeping monitoring Calorie Wake up screen by turning twist Bluetooth Sedentary reminder Alarm clock Message reminder Call reminder Time/date display Time Battery Capacity : 70 mAh Description: LED display,smart healthy bracelet. Heart rate monitoring,motion step,sleep monitoring,alarm. Environmental protection materials convenient installation,clean and non-polluted. 24 hour heart rate monitoring. What’s in the box: 1 x Bracelet,1 x User Manual SKU: 210915064641 Color: Random Weight: 0.3