Get high-quality sound for TV music and more. 3 Modes to tailor your sound - Speech Music Neutral. All-in-one transmitter docking station and charger. Ergonomic control dial adjusts volume. Long-lasting battery life up to 20 hours. Recharge by placing on the stand. Broadcast Audio connects multiple RS 120-W headphones. 2.4Ghz Frequency band. Dynamic 30mm driver. Includes: HDR 120-W Headphones. Transmitter with stereo RCA audio cable. Mains unit with country adapters. Two 1.2V rechargeable AAA batteries. Adapter for 3.5mm audio connection.