The smart bracelet is scientifically designed for holding and charging a pair of true wireless BT earbuds. 5.0 BT headphones with Mic, great for listening to music and receiving calls. The smart bracelet can track your activities all day long and tell you data about , distance, calories burned, etc. Also, it monitors your heart rate, blood pressure, and sleep. Specification:Model: N8Type: Smart Bracelet & EarbudsScreen: 0.96 inch TFTBT Version: headset 5.0, bracelet 4.2Bracelet Battery Capacity: 220mAhHeadset Battery Capacity: 25mAhCharging Time: about 2.5 hoursStandby Time: 10-15 DaysAPP: LookfitSupports: Android 8.1 and above, iOS 8.0 and aboveColor: Black, White, Pink, Red (Optional)Item Weight: 47g/1.65ozPackage Size: 10.2*10.2*5.8cm/4.01*4.01*2.28inPackage Weight: 144g/5.08ozPackage List:1 * Smart Bracelet1 * Pair of Earbuds1 * Magnetic USB Charging Cable1 * User Manual (English)