bout this item LONG RANGE TRANSMISSION - Enjoy reliable connectivity with the wireless hdmi transmitter and receiver, which offers a range of up to 325 feet outdoors, 250 feet indoors and 100 feet through walls. Ideal for large rooms, conference spaces, and classrooms High Quality 1080P Transmission The wireless HDMI extender supports 4K input and 1080P/60Hz Ultra HD output, real-time audio and video transmission, delivering crystal clear clarity for movies, games and presentations