Outstanding Battery life. 300 hours standby time?? 18 hours talking time and 16 hours music time.</br>Latest Neckband style design concept. Newly added foldable function. No need to worry the headset will be break off when you put it in your bag. Just one press to retract the earbuds. The headset cable can be adjust to the best length</br>Easy to use?? just turn the headset on enter pairing mode?? no need additional operation. Easy to change music and the volume and songs.</br>Latest Bluetooth version 4.1. Combine with 6G CVC Noise Reduction technology?? Ensure Hi-Fi Stereo S"quality and Strong Signal</br>Vibration for incoming call. The right side of the headset will vibrate when someone calls you. Will never miss any phone calls.</br></br>Product Description</br></br><b>Main Features:</b><br> 1.Retractable neckband design?? retractable bluetooth headphones?? Especially suitable for sporting situation.<br> 2.Portable and space-saving.<br> 3.Amazing clear sound.The overall voice quality for calling sounds natural and works great.<br> 4.Cutting-edge Design Concept??be ergonomically.Comfortable Wearing Experience.<br> 5.Unparalleled Battery Life.Built in high capacity rechargable lipo battery.<br> 6.Unparalleled Battery Life.Built in high capacity rechargable lipo battery.<br> 7.Pair headset with 2 mobile phones.<br> 8.Answer&End call/Incoming call vibration remind.<br> 9.Power Promt.Each time turning on this headset??it will report headset battery power remaining.<br> 10.Voice Dial.Unlock the mobile phone and double click the volume "o launch teh voice dial??and then just speak teh people name you want to call.This function can work only if your mobile phone support it.<br> 11.Mobile phone anti-lost indicator.<br><br><b>Specification:</b><br> Correpond With: