Rapoo Wireless Optical Mouse and Keyboard - Black (RPO-X1800-BLK) 2.4GHz wireless connection 360 degree Wide range and long transmission distance up to 10m Advanced low power solution provides long battery life Keyboard for up to 12 months Mouse for up to 9 months Plug-and-play Micro Receiver 1000 DPI high precision tracking engine(Mouse) Fn hotkeys for media controlkeyboard