Bask your ears in bold JBL sound: large 40mm drivers with PureBass performance envelop your ears, delivering an expansive soundstage with clarity and precision. Bluetooth technology allows wireless connectivity with your smart devices, with single-button access access to hands-free, clear calling thanks to JBL echo-cancellation technology. Integrated ShareMe lets you take your music social, allowing you to stream music wirelessly to another ShareMe-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. The E40BT’s sleek design and five unique color combinations make a visual statement that’s as striking as the sound.