Micro 2.4GHz Wireless Security Camera / Closed Circuit TV (CCTV) / Babysitter Surveillance System / Children Watch / With Sound Microphone & Micro Mini Color Camera / 150 Foot Range Full Motion Real Time Full Color Video With No Delay & Super Clear Quality 380-lines Resolution 150ft Range , 2.450 GHz Output Frequency , Adjusting Knob On Receiver To Fine Tune Picture Quality Built-in Microphone For Clear Sound , Receiver Is Wall-Mountable Or Can Be Placed On Any flat Surface Camera Runs On 9-volt Battery or AC Adapter Composite Video Connections On Receiver