Dell wireless keyboard mouse combo km113. Sleek design with fully functional hot keys for internet search, email and calculator. Keyboard is spill resistant. 1000 dpi mouse sensor is great to give a fine cursor movement. Key features advanced 2.4 ghz wireless combo full-size layout with instant-access hot keys quiet and good tactile feel functional keyboard tilt angle sturdy and robust for office usage durable keyboard constructed with a life durable keyboard life with 5 million keystrokes system requirements ms windows xp/vista/windows 7 Linux Ubuntu specification (keyboard) rf interface: wireless rf 2.4 ghz battery: 2 aaa hot keys: internet search, my favorite, email and calculator multimedia keys spill resistance dimension: 30.6 x 464.5 x 169.2 mm weight: 550g specifications (mouse) rf interface: wireless rf 2.4 ghz battery: 1 aa tracking sensor: optical led tracking: 1000 dpi dimension: 41 x 116 x 63 mm weight: 71 g.