Ultra-thin & Efficient Keys The wireless, ultra-thin keyboard has an adjustable tilt angle to reduce fatigue, and its soft-touch keys make typing smoother, The full size wireless keyboard offers 18 shortcut keys and a numeric keypad.(The hot-keys not fully compatible with Mac System) 2.4G Wireless USB Dongle & Plug and PlayKeyboard and mouse share ONE USB receiver. No delays or dropouts. Reliable wireless connection up to 10 meters (33 feet) without the need to download a driver Energy Saving & DurabiLityIdle for 10 mins, the keyboard and mouse will sleep, press any button or key to wake up. You can go for months without the hassle of changing the batteries. The keyboard needs 2 x AA battery, the mouse needs 1 x AA battery. (Battery Not Included 3 Adjustable DPIWireless Mouse with 3 levels of adjustable DPI-1000/1600/2400, left and right keys are with low noise to reduce noise interference, without disturbing others Universal CompatibilityWell compatible with Window