Product Description of JBL XB450 Extra Bass HeadphonesDesigned for long listen comfort.Soft cushion ear pads provide a largely airtight seal for direct bass transmission.Headband enables you to take hands free calls from selected smart phones.The Overhead Wired Headphones have an adjustable headband’s structure and is optimized for deep bass playback, providing a stable fit to minimize vibration caused by punchy bass notes.