... Receiver Specifications: - Screen - 3.5 inch TFT LCD monitor - On Screen Indicators - Monitor State, Lock/Unlock, Talk, Take a ... 1350 mAh Rechargeable Li-ion) - Receiving Frequency - 2.4GHz - Wireless transmitting range - approx. 250 meters (ideal conditions) - Onboard Buttons/ ... Mini USB Input, Speaker, Volume -/+, Brightness control -/+, Antenna, Power ON/OFF Switch - Dimensions: L:102 x W:134 x H ...