TrueDio Model TD-220RF Wireless TV Headset Bundle System - Includes 2 Wireless Headsets - Premium Sound Quality, Works With All TV's The Truedio transmitter plugs directly into the back of your TV, satellite/cable box, or other audio source equipped with a digital optical (toslink) or analog audio output (Left &amp; Right RCA or 3.5mm Headphone Jack) The RF (Radio Frequency) transmission delivers unparalleled sound quality through walls, ceilings and outdoors at over a 100ft range without interference<br> <br> Up to 12-Hours of use per Charge Quick 3-Hour Charge Time Replaceable Li-ion Battery (3.7V/350mAh) Adjustable Volume, Tone &amp; Balance Controls &#034;MIC&#034; Button switches the headset from TV Listening mode to Personal Amplification mode LINE-IN (3.5mm Headphone Input) for playing music Soft Silicone Eartips and comfort earhooks Transmitter/charging base 2 Wireless headsets 1 AC power adapter 1 6&#034; RCA audio cable 1 5&#039; RCA audio cable 1 4&#039; Digital Optical (Toslink) cable 2 Pairs of comfort earhooks 4 Pairs of replacement silicone ear tips 1 balance control tool Owner&#039;s Manual TD-210 - 1 Headset TD-220 - 2 Headsets