Sony MDR-7506 Headset

Neodymium magnets and 40mm drivers for powerful, detailed sound
Closed-ear design provides comfort and outstanding reduction of external noises
9.8-foot cord ends in gold-plated plug; 1/4-inch adapter included
Folds up for storage or travel in provided soft case
Frequency Response: 10Hz – 20 kHz
9.8-foot coiled cord and it is not deatachable