Pioneer Headphone SE-MJ722TK with microphone (black) Model: closed-type dynamic Play frequency band: 6 Hz ~ 40 000 Hz / impedance: 32 Maximum input: 1 000 mW / output sound pressure level: 101 dB Use unit:  40 mm / plug: 3.5 mm L-type stereo mini plug / connection code: OFC litz wire 1.2 m Mass: 190 g