Upgrade version of the popular SX-991: with active lifestyle sport yellow?? feel more energetic; adjust the key ""."-" to the side surface more convenient that of the inside.</br>Unique Foldable and Retractable feature: more special and humanized than the universal neckband style design quite easy to storage for pocket and better cord management easy to carry on the go.</br>Top Sound Quality: adopt with the latest Bluetooth chip hear richer and quite natural sound from your devices and provides more fast and stable Bluetooth Pairing.</br>Crystal Clear Communication: built-in high sensitivity Microphone and combine with CVC 6.0 Noise Cancellation technology ensures your chat without external noise or other interference.</br>Outstanding Battery Performance: Bluetooth 4.1 Offers a Faster More Energy Efficient Connection and lower battery consumption supports 18 hours talking time 16 hours music playback time and more than 300 hours standby time.</br></br>Product Description</br></br><B>Specification:</B><BR> Correspond with: Bluetooth 4.1<BR> Support: HSP HFP A2DP AVRCP<BR> Transmitting Power: Class 2 <BR> Working Distance: 10m <BR> Charging Time: 3.5 hours <BR> Talk Time: 18 hours <BR> Music Time: 16 hours <BR> Standby Time: 300 hours<BR><BR> <b>Amazing Foldable and Retractable Neckband Design</b><br> ??<b>Foldable Design</b> makes this Bluetooth headset more flexible. Convenient to storage in your pocket or your bag.<br> ??<b>Retractable Wire Management</b> keeps you from mass?? perfect for sports and outdoor activities?? leave your hands free but not miss any call.<br> ??<b>Luxurious&Smart Neckband Design</b>?? without the hassle of wires?? easy to move the headset and free your hands for other things.<br> ??<b>Special Sweat Resistance</b> is Exactly What You Have Been