Mobipro Riitek H9+- Mini Wireless Keyboard and Mouse Combo with Backlight Innovative design Wireless Mini Keyboard with Mouse keys on top for easy handling and Backlight  Quickview This is a wonderful combo, 2. 4GHz Mini Wireless QWERTY keyboard, TouchPad combo, increased Backlit LED with Micro USB interface adapter for the lectuer, 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 touchpad. Perfect for PC, Pad, Andriod TV Box, Google TV Box.   Key & Unique Features  73 keys, 2. 4GHz wireless Keyboard with Touchpad.  Touchpad DPI adjustable functions.  Built-in high sensitive multi- touchpad.  Mini QWERTY keyboard with multimedia control keys and PC gaming keys.  Auto sleep and wake mode.  The Ergonomically handheld design is easy to carry and operate.  Backlight function Build-in rechargable Li-ion battery that has longer standby time.   Specifications -Operating range: 15 meters(MAX), without signal disturbance and no direction limit.  -Operational voltage: 3. 7V.  -Charge Voltage: 4. 4V ~ 5. 25V.  -Modulation: GFSK.  -Layout: US.  -TX Power: less than +4dBm.  -Frequency tolerance: +30ppm.  -Power consumption: 55mA(on), 1mA(sleep).  -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 cable.  1 * User manual.