Five in One Wireless Headphones:-BT function:-The Link+ Wireless Bluetooth Headphone covers a wide frequency range and delivers strikingly realistic sound with a 40mm driver. It is an absolute comfort to wear with the premium leather foam cups for hours of listening pleasure and superior passive noise-isolation. The foam ear cups create an acoustic seal that blocks outside noises and enhances bass. Each pivoting ear cup also folds flat for compact storage and travel. Stream your music wirelessly for up to 8 hours of continuous talk and listening time from your paired Bluetooth wireless device (such as iPhone, other mobile phones & Mp3 players). The built-in rechargeable battery charges your headphone via the included micro USB charging cable. Range up to 33 feet (10 meters) and you remain connected to your music and calls. Simply switch between phone calls and music with a button. Control volume, play & pause, next & track back directly from the headphone buttons. The discreet invisible microphone offers hands-free conversations and clear phone calls.....MP3 Function:-This Headphone is also has slot for TF/SDHC Card and can play music stored on memory card and works like an MP3 player.FM Function :-The headphones also is equipped with FM radio tuner with excellent tuning reception to produce ultimate listening experience. Aux Function :-When you want to play the music directly from Aux output of a Device then this headphone has Aux input also .Works Like Bluetooth Receiver Also You Can Connect To Home Theater To Listen Music of Mobie Wirelessly.