Dell Kit Mouse and Keyboard KM3322W Wireless, Device Type: Keyboard and mouse set, Wireless Receiver: USB wireless receiver, Connectivity Technology: Wireless, Interface: 2.4 GHz, Keyboard: Adjustable Height: Yes, Hot Keys Function: Volume, mute, Keyboard Technology: Plunger, Mouse: Movement Detection Technology: Optical, Buttons Qty: 3, Movement Resolution: 1000 dpi, Included Accessories: AA battery, 2 AAA batteries, Dimensions & Weight: Keyboard: Height: 25.30 mm, Length: 444.92 mm, Width: 141.22 mm, Starting weight: 497.12 g, Mouse: Height: 38.87 mm, Length: 104.90 mm, Width: 58.32 mm, Starting weight: 57.80 g, 3y Warranty