1. Impressive Sound Quality. With premium CSR chip and advanced technology・ our headphone provides you with impressive sound quality which help you enjoy music and conversation in amazingly clear sounds. <br />2. Incredible Long Playing Time. A built-in 420mAh Li-ion battery provides up to 13 hours playing time. Powerful rechargeable battery enables you keep tunes playing all day long. <br />3. Comfortable Wearing. Super soft ear cushions and the sliding headband help your ears fit snugly・ thus providing lasting wearing comfort. You will not get tired of wearing it even for quite a couple of hours.<br />4. Foldable &amp; Portable. Unique foldable design not only saves space but also makes it portable. It also comes with a premium carrying case for easy storage. You can take it anywhere and anytime.<br />5. Both Wired and Wireless. Provided with an audio cable・ the headphone can be used as wired headphone when the battery is powered off. (Microphone works in wireless mode).<br /><br />Specifications:<br />Bluetooth Version: 4.0<br />Range: 33 feet (10 meters)<br />Talking Time: Around 15 hours<br />Playing Time: Around 13 hours<br />Charging Time: 4 hours<br />Charging Voltage: DC 5V<br />Battery Capacity: 420mAh<br /><br />Package Included:<br />1   Mpow Bluetooth Headphone   <br />1   3.5mm Audio Cable  <br />1   USB Charging Cable<br />1   Carrying Bag <br />1   User Manual<br /><br />Attention<br />1. The closed-back design provides immersive Hi-Fi s