1、With Touchpad: Features a touchpad, built in multi touch navigation trackpad and familiar keyboard layout. A touchpad can take the place of a mouse for directional control for easy web browsing. 2、Scissor Foot Key Design: The keyboard adopts scissor foot key design, the keys are mute and feel comfortable. 3、Characteristics: Equipped with 78 keys and a touchpad, it is full featured, compact, ultra thin, space saving, portable, and quiet. 4、Automatic Sleep Function: After 20 seconds of inactivity, the wireless keyboard will enter a light sleep state. It will automatically enter deep sleep mode if not used for 15 minutes. Click any button to activate it. 5、Support System: Support for Windows, for Android , for OS X, support for smartphones and tablets. Item Type: Wireless Keyboard Material: ABS Working Distance: Up to 10 Meters Modulation System: GFSK Working Voltage: 1.8-3.0v Keyboard Working Current: 5mA Backup Current: 0.3-1.5mA Sleep Current: <0.2mA Key Force: 60±10g Button Life: 3 Million Times Working Temperature: -10±55℃ Battery Specifications: 2 AAA Batteries (not Included) 1 x Wireless Keyboard 1 x USB Receiver 1 x User Manual