3 in 1 MultiFunction & Built-in Rechargeable Lithium Battery 2.4GHz Mini Wireless QWERTY keyboard +TouchPad combo+ LED backlit with USB interface receiver adapter. Touchpad which supports multi-finger functions, A single finger click as left mouse function+two-finger click as the right mouse function+double finger drag as the rolling screen. Humanized Handheld DesignPortable,Small and mini,perfect size with multi-functions for you to grap and hold it with one hand or two hands on sofa or anywhere you want with anytime,this keyboard is compatible with many systems,like PC/ Tablets/ Windows/ Mac/ TV/ Xbox/ PS3/ Raspberry Pi ect. (Note: when used with Amazon Fire TV 4K and Amazon Fire Stick, you need to prepare a Micro usb host OTG cable).