Features:<br />1. 100% brand new popular Bluetooth Sports Headset with retail package!<br />2. Bluetooth 4.0 CSR Stereo in-ear headset. Perfectly transfer HD lossless music. Bluetooth 4.0 Chip: One of the best Bluetooth chip・ which can transmit data at a high speed and bring you smooth music experience without bothering from a mess of cables!<br />3. Built-in microphone for hands free calling.<br />4. HIFI stereo music + calls・ brings you the high quality audio experience of stereo sound. High-fidelity・ CD quality sound effects.<br />5. Sweat-proof and protect your earphone from light rains・ best choice when doing sports. (But inapplicable for swimming・ immersed in water and heavy rain)<br /><br />6. Connect two mobile phones simultaneously.<br /><br />7. Skin-friendly ergonomic design・ auricle shaped ear hook・ rubber coating・ fit your ears perfectly・ high quality materials ensuring the headset comfortable for daily use. Convenient & firmly when doing sports.<br /><br />8. Built-in rechargeable lithium battery・ charge directly from USB port. Up to 6 hours of Talk/Playing Time and 1.5 hours short changing time・ keep you connected to your music and social life whenever you need.<br /><br />9. Reduces noise・ wind and echo. They block most noises around you and give you a personal space in the mid of crowd.<br /><br />10. They are handleable: playback・ next song・ volume up & down・ picking up& hanging up phone calls. They even allow you to call back the last call!<