Interface 2.4 GHz Wireless Receiver USB wireless receiver Dimensions (WxDxH) Keyboard: 44.92cm x 12.3cm x 2.53cm Mouse: 5.832 cm x 10.49 cm x 3.887 cm Supported Battery Type AA x 1 Weight 497g, 57.8g Keyboard Hot Keys Function Volume, mute Keyboard Technology Plunger Mouse Buttons Qty 3 Mouse Movement Detection Technology Optical Mouse Movement Resolution 1000 dpi