This lightweight number pad is designed for anyone who needs a portable touchtype capable keyboard for work or play. It is particularly ideal for business travel or stay at home. Pairing with your device is seamless. After fully charging the number pad, it syncs with your device with one press of the connection key. How to use 1.Open the On/Off switch. The green light illuminates for one second. Press the until the blue light blinks, indicating that it is in pairing mode. 2.Set the settings on your device into search mode until it detects B.O.W keyboard, then pair device. The keyboard will connect automatically. Specification Material: ABS Lithium battery: ?300 cyclesWake-up time: ?5 seconds Standby time: ?160 days Button life: ?3 million times Size: 8.8cm(W)x 13.1cm(L)