HB-BT513-headphone (513red) New Bluetooth Headphone stereo Bluetooth for music play and use as a headset with the built-in mic Works with any iPhone 5/4S/4/3, iPad; Samsung Galaxy 4/3; HTC; NOKIA; HUAWEI; and ALL Android phones; MID; Tablet devices that are Bluetooth enabled Bluetooth Working distance is up to 30 feet away built in Li-battery, Playing time up to 8 hours; and continue talk time up to 6-7 hours Best Audio Performance - Stereo - Wireless Bluetooth 33 feet distance - Over the head - Beyution