Chiefmax Wireless Bluetooth V4.0+EDR HB-800 Neck Band Sport Stereo Universal Headset Headphone for iPhone or Android (black) Exceptional audio with noise suppression and echo cancellation Up to 15 hours talk time, and it fully charges in less than 2 hours Volume Control and Answer/Hang Up Functions on the neck band, so you you can leave your phone in your pocket or purse Around-the-neck wearing style, ensuring you comfort throughout the day Compatible with most of Bluetooth enabled devices, including Apple iPhone, Samsung, LG, Motorola, HTC, SONY, and Nokia cell phones / smart phones