Features: A mind blowing 72 degree field of view 7″ 1280x800px Immersive Display HyperSensitive 5.8GHz 40CH Receiver Included Automatic channel search, can maximum search 10 channels Adjustable straps, light weight,very high comfort. Built-in speaker with volume control on buttons OSD display to show the current informations. HDMI input , connect the Headplay HD goggles directly to your DJI Inspire/Lightbridge or other HD downlink. Support AV IN and AV OUT Battery Purchased Seperately