... mAh Rechargeable Li-ion) - Receiving Frequency - 2.4GHz - Wireless transmitting range - approx. 250 meters (ideal conditions) - Onboard ... Indicator, Mini USB Input, Speaker, Volume -/+, Brightness control -/+, Antenna, Power ON/OFF Switch - Dimensions: L:102 x W: ... (100-240V) 50/60Hz - Transmitting Frequency - 2.4GHz - Wireless receiving range - approx. 250 meters (ideal conditions) - Onboard Buttons ...