Sound Intone BT-02 Wireless Bluetooth Headphones Stereo Folding with Volume Control and Microphone (White/Gold) 1. Construction is solid, the build quality is superb and it felt comfortable on head wearing it for a couple of hours. There is a generous amount of cushion on the leather ear pads and the headband is made of an anti-slip soft material so it won't slip if you're wearing these. 2. These headphones offer crisp and clear sounds with a good mid-ranges and bass in a convenient folding/compact design and they're super easy to connect to your devices. 3.The headphone has built-in microphone .The microphone also performs well along with volume up/down and a multi-function (next/previous track, answer/ reject call) button for convenience. 4. The headphones include a micro USB cable for charging the headphones as well as input cables to hook directly up to a device, instead of using the Bluetooth. The headphones also comes with a in-line cord and the earpieces for the headphones fold inward for more compact storage. 5. The batteries hold a great charge. Up to 500MA battery capacity, make the headphones long stand-by. Charge takes only 2.5 hours for one time,15 hours usage and standby for over 200 hours . Compatible with android cellphones,tablet, laptop,ipad,iphone all Bluetooth devices.