This wireless combo, comprising a keyboard and optical mouse, transmits using the proven 2.4 GHz standard, which offers a range of up to 10 m while providing 360° coverage. Fn keys give you quick access to functions like media player, homepage, volume adjustment, etc. Spill-resistant design of the keyboard, so you don’t have to worry about the keyboard stop working with accidental spills. You’ll enjoy responsive and smooth cursor control with the 1000 DPI high-definition invisible tracking engine. With Rapoo's latest energy saving technology, you can use your keyboard for up to 12 months and mouse for 9 months without power interruption.