ATH-M20X

Type    Closed-back dynamic
Driver Diameter    40 mm
Magnet    Neodymium
Voice Coil    Copper-clad aluminum wire
Frequency Response    15 - 20,000 Hz
Maximum Input Power    700 mW at 1 kHz
Sensitivity    96 dB
Impedance    47 ohms
Weight    190 g (6.7 oz), without cable and connector
Cable    3.0 m (9.8'), straight, left-side exit
Accessory Included    6.3 mm (1/4") snap-on adapter