AKG K 121 Studio

AKG K-121 Studio - semi-open dynamic headphones, 55ohms impedance, 200mW maximum input power, frequency response: 18Hz-22.5kHz, 101dB/V sensitivity, self-adjusting headband, single side jack. Includes 3m cable with 3.5mm stereo mini-jack connector and 1/8" to 1/4" adapter.