Bluetooth standard V4.1 sport stereo headphone. Noise-cancelling microphone reduces background noise</br>Active pairing: Super easy and fast paring with your smartphone or other Bluetooth device with voice guidance; Multipoint technology, LED battery status indicator</br>Unique wearing style: light weight, flexible neckband design with crystal clear sound. With 170mAh capacity, it offers 4-6 hours talk time, 7 hours play time, and 36 hours standby time</br>Simple-to-use: control all functions of your music (volume, sound, song selection) and calls from your phone via our simple-to-use user interface on the headphones themselves</br>Packaging includes: H784 HeadSet, Ear hook, Micro USB Charging cable, Operating instructions</br><br/>http://www.amazon.com/gp/product/B00Y6LJG5Y