MOFii wireless keyboard and mouse combo, New designed version, full-sized 110 keys including media keys, functional hot keys and numeral keys, a good partner for office working. Percifications Working voltage: powered by one 1.5V Aaa battery for keyboard and one 1.5V Aa battery for mouse(Not included) Working current: 5mA Transmission speed: 2M bps Keyboard size: 443x138x29(h) 2mm Mouse size: 104x69x35(h) 2mm Keyboard weight: about 460g 5g Mouse weight: about 75g 5g Package includes: Wireless keyboard 1 Wireless mouse 1 Wireless Usb receiver1 User manual 1