This mini wireless keyboard has BT and 2.4G dual modes. It can be used for e-mails, remote control, message input and games. It is compatible with PC, laptop, for Mac OS, Linux, Android TV box, and Windows system. Convenient to use, you can use it on the sofa to browse the Internet. Features: Scroll through long documents or web pages faster and easier with this wheel, same as using your mouse, enjoy unique scrolling experience. It can be used on devices like smart phones, pads, and TV box with BT function; and for those PC or TV box without BT support, you can use 2.4GHz USB receiver. Supports multi-finger functions, a single finger click as left mouse click, two-finger click as the right mouse click, double finger drag as the rolling screen. Large compatibility, suitable for Windows, for Mac OS, Linux, Smart TV, and Android system. Mini size, easy to carry. With 2 levels brightness backlight, you can use it at night. Note: BT connection supports Windows 8 6.0 and above. Specifications: Brand Name: Rii Product No.: i4 Product Name: Wireless Keyboard Connect Port: USB2.0 or above Processor (MCU): TLSR8267F512ET48 Transmit Mode: BT4.0 + (RF) 2.4GHz Wireless Technology Power Supply: 700mAh Working Current: