MONODEAL 606345491642 is a wireless stereo headphone system that allows you to listen to music or audio from various sources like TV, DVD, or MP3 players without the hassle of wires. It features automatic tuning and a phase-locked loop (PLL) transmission system for clear and stable audio. The rechargeable headphones have automatic battery recharging and a long range of up to 50 meters in open areas. The system includes a transmitter with a built-in charger and an audio connection cable.