1. V4.1 + EDR Bluetooth version: quick connection speed, intelligent operation, low power consumption, noise reduction call and stable connection. 
2. Built-in microphone, support volume up / down & next song / previous song & play / pause. 
3. Good music, clear talk sound. 
4. Ideal for most smartphones (such as: iPhone, Samsung, HTC, Sony, LG, Nokia, Xiaomi, Huawei, Lenovo, Motorola, Meizu, BlackBerry etc.). 
5. Exquisite craftsmanship and fashion appearance. 
6. Adopt high quality materials, durable and sturdy, 
7. Portable and handy, easy to carry. 
8. Smart noise reduction, brings pretty good listening experience. 
9. Confirms to the human ear structure design, wearing comfortable will not hit the skin. 
10. Professional sweatproof design, enjoy sports sweating.