iPazzPort Mini Wireless Keyboard with Touchpad for PC/Android TV Box/PS3 and HTPC, 2.4 Ghz, Black 2.4GHz wireless connection via the included usb dongle, plug and play. Small and handheld design, innovative shape,perfect for Raspberry Pi 3, Android TV Box , HTPC and PC. QWERTY with 92 keys, wireless keyboard with touchpad supporting multi-touch function, mouse left and right buttons,easy to type and copy/paste. Wireless mini-keyboard needs two AAA batteries, it's very easy to replace (batteries not included). Small and handheld design, innovative Shape, perfect for raspberry pi 3, android tv box , htpc and pc. If can't work or lost connection, re-sync as below steps:1. Charge keyboard for two hours and switch on;2. Hit Fn+F1 simultaneously for three seconds, the light on keyboard would blink;3. Plug dongle into device usb port, the light would go out soon.