bull The adjustable headband's structure is optimized for deep bass playback, providing a stable fit to minimize vibration caused by punchy bass notes bull Long battery life gives you extended listening with 30 hours bull Soft cushion ear pads provide a largely airtight seal for direct bass transmission. When not in use the ear cups swivel flat for easy packing bull Designed for long-listen comfort bull Volume control with built-in mic on the headband enables you to take hands-free calls from selected smartphones while listening to music bull Freedom of wireless connectivity with Bluetooth technology up to a distance of 10 meters