Quick view: this is a wonderful Combo, Rii 2.4GHz Mini wireless QWERTY keyboard, touch Pad Combo, with USB interface adapter for the lecture, sales Manager, presenter and others, from within a 15' radius make a presentation and operate PC wirelessly. Change slides and screen options, write on the screen, emphasize words and objects just by using this wireless Mini keyboard and mouse with touch Pad. Perfect for PC, Pad, Andriod TV box, Google TV box, etc. Features: 92 keys, 2. 4GHz wireless keyboard with touch Pad. Touch Pad DPI adjustable functions. Built-in High sensitive Smart touch Pad with 360-degree Flip design. Mini QWERTY keyboard with multimedia control keys and PC gaming control keys. Auto sleep and auto wake mode. Innovative shape, Pro table, elegant. The ergonomically handheld design is easy to carry and operate. Build-in removable rechargeable Li-ion battery that has longer standby time. Perfect for PC, Pad, Andriod TV box, Google TV box, for Xbox360, for PS3, HTPC/IP TV, etc. Specification: operating range: 15 meters), without signal disturbance and no direction limit. Frequency range: 2. 403GHz 2. 480GHz operational VOLTAGE: 3. 3V charge VOLTAGE: 4. 4V 5. 25V Modulation: GFSK channel: 78channels TX power: less than +5dBm transmission rate: 1M bit/sec frequency tolerance: +/-30ppm power consumption: 55mA(on), 1mA(sleep) color:Black battery Type: built-in lithium-ion battery notice: after 3 minutes without any operating will into sleep mode, press any key about 1S to wake up. Package including: 1 * wireless keyboard 1 * wireless receiver 1 * charging data cable 1 * user Manual note: this device requires a USB port to operate.