Panasonic Headphones On-Ear Lightweight with XBS RP-HT21 (Black & Silver) Wired On-Ear Headphones: Lightweight, open-air design on-ear headphones weigh just 1.2 ounces without cable On-Ear Stereo Audio: 30mm large neodymium drivers deliver rich powerful bass and natural treble Improved Bass Response: XBS port magnifies low-frequency sound for full, robust bass Wide, Ergonomic Headband: Comfort-fit with a wide headband and foam-cushioned earcups for added listening comfort Extended Headphone Cord: Long 4.5-ft. cord threads comfortably through clothing and bags