Audio Technica ATHM40fs
Operation: Closed-back
Impedance: 60 ohms
Element: Dynamic
Maximum Input Power: 1,600 mW
Driver Diameter: 40 mm
Weight (without cable): 8.8 oz. (250 g)
Frequency Response: 5 - 28,000 Hz
Cable: 11 ft. (3.4 m), left-side entry
Sensitivity (1 mW): 100 dB
Connector: 1/4 in. (6.3mm) phone plug
Magnet Type: Neodymium