Bluetooth technology allows wireless connectivity with your smart devices, with single-button access to enabling a pure connection to your wireless device for clear hands free calling. Integrated Share Me lets you take your music social, allowing you to stream music wirelessly to another Share Me equipped headphone. And a built-in rechargeable Li-ion battery keeps the sound going with 16 hours of uninterrupted play time. The ergonomic headband and 3-D hinges provide for long lasting comfort. Soft, leatherette ear cups cradle your ears for all-day comfort while providing a heightened level of passive noise reduction.