Rapoo 2.4Ghz Wireless keyboard Mouse Combo (9060 Black) With Rapoo's latest energy saving technology and power switch , you can use your keyboard for up to 24-month and the mouse for 18-month without power interruption Fn key gives you quick access to media player, homepage, volume adjustment and etc from keyboard Responsive and smooth cursor control with 1000 DPI high-definition invisible tracking engine from mouse Reliable 2.4GHz wireless connection with up to 10m working range ultra-slim design of 5.6mm at thinnest, scissor key structure and stainless steel plate, brings you comfortable tactile Keyboard Wireless Technology: 2.4Ghz RF Keyboard Host Interface: USB Nano Receiver 2x AAA alkaline batteries (pre-installed)