Wireless Headphones Bluetooth, leatherette ear cushions with a microphone, ergonomically shaped headband, 50 mm transducers, 20Hz-22kHz, 117 db, 3.5mm jack, built-in Li-Ion battery, USB charging The new generation of headphones JBL combines superb sound quality with uncompressed wireless transmission technology. They guarantee top enjoyment of thanks to the large 50 mm PureBass inverters with power. Surrounds your ears a wide soundstage that came with clarity and precision. Bluetooth lets you uninterrupted multipoint connection with two other devices. Thanks to the integrated technology of Sharm you can take the music into society and wirelessly stream with other headphones equipped with JBL Shara. Power is provided by Li-Ion battery that lasts up to 18 hours. Ergonomically shaped headband with 3D mechanism and soft leatherette ear pads will provide long-lasting comfort. Key Features Bluetooth for wireless calls and music playback. Built-Shara. Built-in USB rechargeable Li-Ion battery that provides 18 hours of uninterrupted listening. Pure technology for echo cancellation to answer calls without using your hands with a clean connection to your wireless device. JBL distinctive sound with PureBass performance and world-class 50 mm drive. Ergonomically shaped headband and leatherette ear cushions provide a comfortable fit and effective noise isolation. Enjoy quality Headphones deliver intense audioz?itek with crystal clear tones and deep bass unprecedented. Their sleek design creates the visual impression that is as remarkable as their sound. Forget silent boredom and enjoy high quality music, with even higher quality headphones JBL Synchros. Specifications: Compare Ear Coupling Supra-aural Construction Closed Fold-up Folding Determination Headset, with Microphone (handsfree/telephone) Color Blue Headphone Characteristics Features Headphone earcups Frequency out 20 Hz Frequency in 20,000 Hz Sensitivity 117 dB/mW Impedance 32 Ohm Size converters 50 mm Connection Connections Bluetooth. New other (see details): A new, unused item with absolutely no signs of wear. The item may be missing the original packaging, or in the original packaging but not sealed. The item may be a factory second or a new, unused item with no defects.