A2 resin mold earphone In-ear subwoofer $ 19.01 Headphone type: in-ear headphones Wearing method: rear winding Headphone output source: HiFi Plug diameter: 3.5mm Plug type: L bent Sound principle: moving coil Frequency response range: 20Hz-20000 (Hz) Impedance: 16 () Sensitivity: 109 (dB) Wire length: 1.25 (m) Speaker diameter: 10 (mm)