MAX450 over-ear all-in-ear subwoofer headphones -Good cushion comfort -Handsfree -Direct sound transmission ear cushions with soft cushions – High-quality materials Specification: Drive unit: 30 mm dynamic-dome type Closed: Yes Impedance (OHM): 24 Ω at 1 kHz Frequency response: 5-22,000Hz Sensitivity (DB/MW): 102 dB/mW Line type: Y type Cable length: 1.2 m PLUG: Gold-plated L-shaped four-core stereo mini Wearing method: headband type, ear hook type