Description Product Type Keyboard and mouse set Interface 2.4 GHz, Bluetooth 5.0 Wireless Receiver USB wireless receiver Dimensions (WxDxH) Keyboard: 17.1 in x 4.8 in x 1.1 in Mouse: 2.7 in x 4.5 in x 1.6 in Hot Keys Function 12 programmable keys of F1-F12 Keyboard Technology Scissors Movement Detection Technology Optical Movement Resolution Adjustable DPI. 1000, 1600(default), 2400, 4000 Supported Battery Type AAx1