Features: 1.Reliable 2.4GHz wireless connection: with advanced 2.4GHz wireless technology, plug and play the USB receiver into USB port, and the wireless keyboard mouse will establish connection with your computer without any other driver 2.Fast and stable data transmission, no delay or loss, with a working range of up to 10 meter 3.Mute Scissor?Switch: this construction bring silent press and rapid rebound, effectively improve working efficiency 4.Wireless keyboard mouse combination has a stable scissor mechanism under each key, and compact in shape, providing extremely comfortable and accurate typing experience 5.Ultra thin portable design: this keyboard is not full?size keyboard, no 10 key digital keyboard, but compact and portable, simple style saving space layout and easy to carry. Very suitable for business travel specification:Item Type: Keyboard Mouse Set Wireless Mouse Frequency: 2408mHz-2474mHz Wireless Mouse Channels: 34 (frequency hopping) Wireless Working Distance: Approx. 10meter / 32.8ft(maximum) Wireless Rated Voltage: 1.5V Mouse Sensing System: Optics Mouse Resolution: 1200DPI USB Version: 1.1 (receiver) Battery: Keyboard and mouse each AA battery (not included) PackageList: 1 x Keyboard 1 x Mouse 1 x Receiver