Feature: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 driver2. Fast and stable data transmission, no delay or loss, with a working range of up to 10 meter3. Mute Scissor-Switch: this construction bring silent press and rapid rebound, effectively improve working efficiency4. Wireless keyboard mouse combination has a stable scissor mechanism under each key, and compact in shape, providing extremely comfortable and accurate typing experience5. 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 travelSpecification:Item Type: Keyboard Mouse SetWireless Mouse Frequency: 2408mHz-2474mHzWireless Mouse Channels: 34 (frequency hopping)Wireless Working Distance: Approx. 10meter / 32.8ft(maximum)Wireless Rated Voltage: 1.5VMouse Sensing System: OpticsMouse Resolution: 1200DPIUSB Version: 1.1 (receiver)Battery: Keyboard and mouse each AA battery (not included).Package List:1 x Keyboard1 x Mouse1 x ReceiverNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.