WISE TIGER Bluetooth 4.0 Headset On Ear Wireless Headphone with Fm Radio and Tf Card (8G) Very Important :Thank you using the bluetooth headset . After conversion to the FM mode, click the pause button(The button in the 6 o'clock direction) can automatically search FM channel . Bluetooth 4.0 Technology that provides crystal clear highs and high-fidelity sound. Connect the headphone to any bluetooth enabled device from a distance of 10M/33ft. Mic in the ear cup let you take calls without removing your bluetooth headphones. English coming call number; Easy Access: The simple user interface on one of the earphones allows you adjust the volume, play/pause, select songs and answer/hang up calls completely effortlessly. Hi-Fi STEREO SOUND: Adopted the CSR Bluetooth Stereo Chips which is the newest technology, strengthen the signal 2 times. The apt-x code provides stereo and high-fidelity sound. Enjoy music in your world. LONG STANDBY: The rechargeable lithium-ion battery provides up to 5 hours of listing, durable enough to stand up to on-the-go use. and a USB charging cable is included. Almost 10m/33ft transmission distance, you can put your bluetooth device away and enjoy music.AND~~~~You can adjust the angle of the wearer, so it does not hinder your hearing, wear the headset, you can still hear voices outside, of course, you can not just listen to voices outside, if you want so.