IOGEAR Long Range 2.4 GHz Wireless Keyboard and Mouse Combo, GKM552R 2.4 GHz Technology allows you to use Keyboard and Mouse from up to 33 ft. away from your computer. Wireless USB receiver for keyboard and mouse share is conveniently stored in a compartment beneath the mouse Spill-Resistant Accidental liquid spills and splashes will harmlessly drain out of your Keyboard Precision Ergonomic 5-Button Mouse DPI switch allows you to adjust Mouse sensitivity to your preference Comfortably scroll web pages click forward backward online conveniently Use one or two batteries depending if you prefer a lighter or heavier mouse Two batteries double the battery life to 1 year with normal use 2.4 GHz Technology allows you to use Keyboard and Mouse from up to 33 ft. away from your computer Spill-Resistant Accidental liquid spills and splashes will harmlessly drain out of your Keyboard Precision Ergonomic 5-Button Mouse DPI switch allows you to adjust Mouse sensitivity to your preference Comfortably scroll web pages click forward backward online conveniently Use one or two batteries depending if you prefer a lighter or heavier mouse Two batteries double the battery life to 1 year with normal use Volume Control Control media volume with hot keys