This Smart&light Keyboard is the best choice forlecturer, sales manager or presenter! You can make a presentation and operate PC wirelessly via this wireless keyboard. Change slides and screen options, write on the screen. Mini Wireless Keyboard is a trend for Meeting, Education, Home Entertainment, Business Travel.ect.Features:3 in 1: Keyboard, mouse and touchpad 3 in 1. 82Keys with Touchpad Design. Connect via Bluetooth, Wireless operation of your PC up to 10m, Smart and Convenient. USB transceiver, Plug and play: no need to install software. QWERTY key layout supporting multi language. Add code Funtion, eliminate radio interference. With LED light on the top. Flip 90 degree touch convert (Fn+ESc). Windows multimedia control keys (GOOGLE TV HOTkey). Ultra sensitive touchpad supporting multi touch. Replaceable 3A battery (not included). Unique Page up and Page down key for presentation. Arbitrary pairing. System Supports:Windows 2000/ XP/ Vista/ CE/ 7/ 8(all Windows system) Linux(Debian-3.1,Redhat-9.0 Ubuntu-8.10 Fedora-7.0 tested) DOS,BOIS,Android pc os,mac os,IOS Specifications:Operating distance: 10 meters Model: KP-810-19BTT Type: 2.4G RF Working voltage: 3.0V Power supply: 3A battery * 2(not included) Item color: Black Item size: 15.8 * 5.6 * 1.5cm/ 6.22 * 2.20 * 0.59in Item weight: 66.5g Package includes:1x Mini wireless keyboard 1x USB transceiver 2x AAA battery 1x user manual