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 />6. Connect two mobile phones simultaneously.
<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 />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 />9. Reduces noise, wind and echo. They block most noises around you and give you a personal space in the mid of crowd.
<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!
<br />13. Strong Compatibility. Will work with any Bluetooth capable device & A2DP enabled device such as MP3, MP4, iPad, iPhone, iPod, Android Smart Phones, tablets etc.
<br />14. Say YES to answer call, NO to reject.
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<br />Specification:
<br />Bluetooth version: V4.0
<br />Support: HSP, HFP, A2DP and AVRCP
<br />Battery: 3.7v 75mAh
<br />Frequency range: 2.4GHz
<br />Operating distance: up to 10m(free space)
<br />Talking/music playing time: about 6h
<br />Standby time: 260h
<br />Charging time: about 1.5h
<br />Frequency response: 100-8kHz
<br />Operating temperature: -10~65 
<br />Color: black+green
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<br />Package contents:
<br />Headphone*1
<br />USB cable*1
<br />Earplug*4(2 pairs,not including 2 on the earphone)
<br />Ear stabilizer*2(not including 1 on the earphone)
<br />User manual*1