Plug diameter: 3.5mm Plug type : Straight type Whether wireless headphones: wired headphones With or without a microphone: Yes Sound principle: dynamic circle Frequency response range: 20-20000 (Hz) Impedance: 16 (Ω) Sensitivity: 114 (dB) Distortion rate: 0.05 (%) Wire length: 2.2 (m) Horn diameter: 50 (Φmm) Earplugs / earmuffs material: artificial protein Headphone wire material: braided wire