Plug diameter: 3.5mmFrequency response range: 18-20000 (Hz)Impedance: 32 (Ω)Sensitivity: 116 (dB)Distortion rate: 1 (%)Wire length: 1.2 (m)Horn diameter: 10 (Φmm)Earplugs / earmuffs material: siliconeHeadphone cable material: TPE