About Product:Suggested retail price: $108.00 brand: neutral article number: SH - 18 models: SH - 18 2017 source categories: : time to market spot type: type headset headphones, headset wearing way: headset output audio source: communications equipment plug diameter: 3.5 mm plug type: if the bluetooth wireless headset: both with and without the microphone: there are voices: moving coil frequency response range: 20-20000 (Hz) impedance: 32 (Ω) sensitivity: distortion rate: 105 (dB), 0.3 (%) wire length: 1.2 (m) trumpet diameter: 40 Φ (mm)