[COMPLETELY HASSLE-FREE] Enjoy your TV experience with a partner. The Duet comes with two pairs of wireless headphones, each factory pre-paired to the transmitter base, so theres no need for you to go through a complicated, manual pairing process. All you need to do is plug in, power on, and go! [PASS-THROUGH CAPABILITIES] The Avantree Duets pass-through feature allows headphones to work TOGETHER with your existing soundbar or stereo AV Receiver while sharing the same audio output port on your TV. Hear the TV at your own volume through the headphones while your family / friends listen through the speakers. [PASS-THROUGH SUPPORT] The Duet’s pass-through capabilities allow you to listen through both an external speaker and the Duet headphones simultaneously. [CLEAR VOICE MODE] By lowering background noise and boosting voices, the Duet’s clear voice mode allows you to hear on-screen conversations and dialogue more easily. [EXTENDED PLAYTIME] Each pair of headphones can last up to 20 hours on a single charge, and the included transmitter doubles as a hassle-free charging dock that’ll fully charge your headphones within 1.5 hours.