2.4GHz DIGITAL WIRELESS HEADPHONES FOR TV - voice highlighting & noise reduction tech reduce TV background sounds so TV dialogues are easier to hear through our headphones. Auto signal control tech ensures stable TV audio output, no worries being disturbed by sudden TV volume changes. Compatible with optical, RCA & 3.5mm audio out connectors. If TV's optical out is occupied by sound bar, you need an optical splitter for installation. ADVANCED 2.4GHZ FHSS TECH,NO PAIRING OR DELAY, LONG TRANSMISSION - Thanks to 2.4GHz automatic FHSS tech, TV headphones wireless promise superior sound reproduction and the strong signal can go through ceilings or walls. You can even walk around in your home to listen. The effective distance up to 100 feet. No need pairing, no lip-sync delay, no need sitting in front of the transmitter at a certain position, no interruption when people passing by.