About Product:2017: time to market supply of goods categories: spot type: headset headphones types: in-ear headphones wearing way: in-ear headphones output audio source: communications equipment 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: 20-20 k (Hz) impedance: 32 (Ω) sensitivity: distortion rate: 104 (dB), 0.1 (%) wire length: 1.2 loudspeaker diameter (m) : 10 (Φ mm)