Type: Keyboard - wireless Interface: 2.4 GHz Wireless Receiver: USB wireless receiver Hot Keys Function: Mute, volume -, volume + Type: Mouse - wireless Technology: Optical Buttons: 3 Resolution: 1000 dpi OS Required: Apple MacOS, Android, Google Chrome OS, Linux 6.x, Microsoft Windows 7 / 8 / 8.1 / 10 / 11 Keyboard: 44.92 cm x 12.3 cm x 2.53 cm / 497.12 g Mouse: 5.832 cm x 10.49 cm x 3.887 cm / 57.8 g