2.4G wireless connection 12 months battery life Round literary keycap Multimedia shortcut keys for Win system 1000DPI tracking engine Intimate mute button Technical: Keyboard product size: 447*131*31mm Keyboard product weight: about 492g Keyboard transmission mode: wireless 2.4G Number of keyboard keys: 104 keys Keyboard power supply: 1 AA battery Keyboard battery life: about 12 months Mouse product size: 113*64*30mm Mouse product weight: about 59g Mouse transmission mode: wireless 2.4G Mouse Ergonomics: Left and Right Hand How the mouse works: optical engine Mouse buttons: left button, middle button, right button Mouse wheel direction: two-way Mouse resolution: 1300DPI Maximum mouse acceleration: 10G Maximum mouse tracking speed: 30inch/s Mouse power mode: 1 AA battery Mouse battery life: 12 months