Coordination can auto-rotate and adjust according to the handling position. Practical and convenient operation with a well-designed keyboard. Functionality of the device depends on which side is facing upward. Colorful backlight on the keyboard for easier use in low-light conditions. Wireless air mouse for remote control, practical and portable. Type: Wireless Air Mouse Connection Port: USB 2.0 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 4 dBm Power Supply: Built-in Lithium-Polymer Battery (Included) Charging Voltage: 5.25V–4.4V Charging Current: 300mA Operating Current: Less than 15mA (Backlight Off) Dormancy Current: Less than 100μA Features: Keyboard, Touchpad, Easy Operation, Universal, Backlight, Wireless Color: Black Material: Plastic Size: 145mm x 75mm x 13.5mm / 5.71in x 2.95in x 0.39in Package Contents: 1 x Wireless Keyboard 1 x Receiver Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement allows an error of +/- 1–3 cm.