HolyHigh smart fitness band ,your health manager to offer you a better and fit lifestyle . FAQ : 1.How to use and connect the smart phone with HolyHigh smart fitness tracker ? 1) Download the App named VeryFit from APP store or Google play or by scanning the QR code in the user guide 2) Turn on phone Bluetooth, and connect the fitness band with the phone via Bluetooth ,the fitness band Bluetooth name is"ID115U",when you try to connect the phone with the fitness band ,there will be "Bluetooth logo"on the fitness band screen 3) Once the 115U fitness tracker was correctly paired to the phone, the fitness tracker would vibrates 2.How to charge HolyHigh fitness tracker? 1) HolyHigh fitness tracker is with a built-in USB dongle, no need separated charger .Please remove off the both sides strap of the fitness tracker to find the USB dongle, kindly plugin the device in the USB port for charging as soon as you received it. 2) Very important :The red light is on when the charge is successful.In case you could not see the red light,please check if the USB dongle is with metal sheet,if yes, please reverse the USB dongle with metal sheet ,and plug it into the Charger's USB port for charging Item Basic specifications: -Item Merchant SKU : YG3U-Pink-Black -Item screen size:0.86'OLED -Item strap size: 240*16*10mm -Strap material: Soft and wearable TPU -Item Net weight: 18g -Item Sensor:Kionix -Item Battery type: Plymer Li Battery -Item Battery capacity:45mAh -Waterproof:ipx 67 -Charging Time:1-2hours -Stand by time : more than 7 days Note: - This smart fitness band is withno heart rate monitor. -The Accuracy of step pedometer would be about 95% .