APP:fitpro Compatible systems: Android 5.0 (above), IOS8.0 (inclusive) and above Bluetooth: Bluetooth 4.0 Capacity: 80mAh Charging method: USB Charging time: about 2H Life time: Use 2-3 days, standby 5 days APP support languages: English, Simplified Chinese, Traditional Chinese, Dutch, Russian, French, German, Portuguese, Spanish, Turkish, Japanese, Polish, Arabic, Malay, Thai, Czech, Slovak. Increase the display area, so that calls, messages, reminders are clearly visible, and more information can be viewed at a glance. After the bracelet is connected to the fitProAPP, you can download various exquisite dials from the fitProAPP; you can also convert the scenery and favorite pictures you took in your mobile phone into the background of the dial to meet the diverse needs of users . Turn your wrist to control the phone to take pictures, explore the new fun of taking pictures, and freeze every wonderful moment of yours. If you are fully invested in forgetting time, the bracelet will remind you to get up and walk, and wake up to a better physical state.