Touch panel coordination index can auto-rotate an adjust according to the handling position. Practical and convenient operation touch panel and keyboard designed. Whether the touch panel works or the keyboard works depends on which side is upward. Build-in colorful backlight on the keyboard, more easy to use in dark situation. Wireless air mouse for remote control, practical and portable. Type:Wireless Air Mouse Connection Port:USB2.0 or above Transmission Mode:2.4 GHz Wireless Transmission Distance:up to 10 meters Frequency Transmission:2400-2483 MHZ (16 Channels) Transmission Power: less than equal 4bd Power Supply:Built-in Lithium-ion Polymer Battery (Included) Charging Voltage:5.25V-4.4V Charging Current:300mA Operating Current:Less than 15mA (Backlight Off) Dormancy Current:Less than 100uA Features: Keyboard, Touchpad, Easy Operation, Universal, Backlight, Wireless Colour:Black Material:plastic Size:145mmx75mmx13.5mm/5.71inchx2.95inchx0.39inch(.) Package Contents: 1 * Wireless Keyboard 1 * Receiver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.