Sennheiser HD380 Pro

Impedance : 54 Ω
Connector : 3.5 mm Jack, straight
Frequency response : 8 - 27000 Hz
Max. sound pressure level : 110 dB (1 kHz, 1 Vrms)
THD, total harmonic distortion : < 0,1% (1 kHz, 100dB SPL)
Ear coupling : circum-aural
Cable length : 1 m coiled, extendable up to 3m
Transducer principle : dynamic, closed
Power supply : 500 mW
Weight w/o cable : 220 g