Built-in Apt-x Technology Reproduces Cd Quality Sound Over A Bluetooth Connection</br>Delivers Enhanced Audio & Bass Response.</br>Sweat-proof : the material of the headset is in a sweat design?? do not dip it in the water / Exercise-proof : Very comfortable and secure in the ears</br>Talk/Playing Time : 5 hours / Standby Time : 150 hours (Please use the USB charge cable to charge it first..)</br>Comfortable Design : The flexible?? bendable?? neckband style ensures a 100% comfortable fit.</br></br>Product Description</br></