Defender PHOENIX1 Wireless Video Security System with Portable LCD Monitor and Indoor/Outdoor Night Vision Surveillance Camera (Black) Audio Support a built-in microphone that lets you hear everything thats happening in your monitoring location Durable Camera for Indoor or Outdoor Use the discreet camera is built with durable aluminum Completely Wire Free Surveillance both the monitor and camera can run on battery power, with no need for wires Avoid Interference & Interception with Clear Signal Technology this system transmits over a 900mHz frequency Continuous Security Day or Night the camera comes equipped with infrared night vision Avoid Interference & Interception with Clear Signal Technology - This system transmits over a 900mHz frequency Completely Wire Free Surveillance - Both the monitor and camera can run on battery power, with no need for wires Continuous Security Day or Night! - The camera comes equipped with infrared night vision Durable Camera for Indoor or Outdoor Use - The discreet camera is built with durable aluminum Audio Support - A built-in microphone that lets you hear everything thats happening in your monitoring location