Specification:Condition: 100% Brand NewItem Type: Wireless KeyboardMaterial: Plastic + SiliconeColor: As Pictures ShownConnection Mode with Computer: WirelessKey Number: 81 KeysWireless Transmission Frequency2.4GHzWhether Support Ergonomic: SupportOperating Distance: Maximum 10MTransmission and Control2.4G RF Wireless Radio Frequency TechnologySensor3-Gyro + 3-GsensorKey Number: 81(Keyboard Consists of 38 Keys)Controlling Distance10mBattery Type: 2 x AAA Battery(Not Included)Working Power: Less Than 10mA Under Noiseless Working StatusSupport System: For Linux/Android/Windows/IOS OSXWeight: Approx. 117gPackage List:1 x Multifunction USB 2.0 2.4GHz Wireless Remote Control Keyboard1 x USB2.0 Receiver Adapter1 x User Manual