How to Use:1. Turn on the switch on the keyboard, shortly press the Bluetooth switch to connect.2. Turn on the bluetooth function on your mobile phone or computer, pair it, and use it after successful connection.Specification:Item Type: Wireless Bluetooth Keyboard Bluetooth 3.0: Standard MICR InterfaceWithin 10 meters: Effective OperationModulation Method: GFSKWorking Voltage: 1.8~3.6VWorking Current: <2.0mAStandby Current: 0.3~0.5mASleep Current: <40UACharging Current: ?200mAStandby Time: >30 DaysCharging Time: <2hrsLithium Battery Capacity: 110mAhContinuous Working Hours: 44hrsButton Force: 80±10gButton Life: 5 Million ClicksWorking Temperature: -10~55 DegreesPackage List:1 x Keyboard1 x Charging cable