Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si coordination index can auto-rotate an adjust according to the handling position. Practical and convenient operation and keyboard designed. Whether the 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.