Rapoo X1800 Wireless Keyboard and Mouse Combo (Black) Reliable 2.4GHz wireless connection Reliable 2.4GHz wireless connection with up to 10-meter working range. Long battery life With Rapoos latest energy saving technology and power switch , you can use your keyboard for up to 12-month and the mouse for 9-month without power interruption. Media control Fn key gives you quick access to media player, homepage, volume adjustment and etc.