... backlight function High quality Quickview:This is a wonderful combo, 2.4GHz Mini Wireless QWERTY keyboard, TouchPad combo, with USB ... Pad, Andriod TV Box, Google TV Box, for Xbox360, for PS3, HTPC/IPTV, etc. Specification:Operating range: 15 meters(MAX), without ... signal disturbance and no direction limit.Frequency range: 2.403GHZ ~ 2.480GHZOperational voltage: 3.3VCharge Voltage: 4.4V ~ 5. ...