PIONEER Controller Equipped with Dynamic Closed-Type Canal Earphone SE-CL722T-L (Blue) TYPE: closed-type dynamic / unit diameter:  8 mm Reproduction frequency band: 5 Hz ~ 22 000 Hz / impedance: 16  / maximum input: 100 mW / output sound pressure level: 100 dB Connecting cord: 1.2 m / plug: 3.5 mm 4-pole stereo mini plug (I type) Mass: 9 g Accessories: earphone chip (silicon) XS / S / M / L