About Product:2017: time to market supply of goods categories: spot type: type of headsets, in-ear headphones wearing way: in-ear headphones output audio source: general plug diameter: 3.5 mm plug type: type into whether wireless headset: wired headset with and without the microphone: there are voices: moving coil frequency response range: 20-20000 (Hz) impedance: 16 (Ω) sensitivity: distortion rate: 106 (dB), 0.1 (%) wire length: 1.2 (m) trumpet diameter: 10 mm) (Φ earplugs/ear cover material: silicon earphone wire material: high elastic wiring