BEST SOUND QUALITY: Built-in the BEST CSR brand chipset from U.K. That is the key to provide high quality sound. UP TO 8 HOURS Music playing for full battery charge. Super quick charge time with full charge light indication.The headphone battery status will be automatically displayed on the IOS Phone screen. SUPERB SOUND Quality headset and Bluetooth V4.1+EDR for best stereo sound and superb bass sound. Clear high & low volume. Best wireless earbuds sound. EASY TO USE Technology with voice notification of incoming calls. Superb microphone quality. WITH EASY TO USE BUTTONS Allows Skip/Play/Pause on your music tracks as well as all phone use without reaching your phone. Up to 30ft Bluetooth range in the open space and 10ft in the obstacles space. Super quick pairing with android, IOS and other Smartphones.