This is a wonderful combo, 2. 4GHz Mini Wireless QWERTY keyboard, TouchPad combo, with USB interface adapter for the lecturer, 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 touchpad.
Operating range: 15 meters(MAX), without signal disturbance and no direction limit.
Frequency range: 2.403GHZ ~ 2.480GHZ
Operational voltage: 3.3V
TX Power: less than +5dBm
Transmission rate: 1M bit/sec
Frequency tolerance: +/-30ppm
Power consumption: 55mA(on), 1mA(sleep)