B12 Bluetooth wireless folding headset $ 23.25 Plug diameter: 3.5mm Plug type: Bluetooth Sounding principle: moving coil Frequency response range: 20-20000 (Hz) Impedance: 32 () Sensitivity: 108 (dB) Distortion rate: 1 (%) Wire length: 1 (m) Horn diameter: 40 (mm) Headphone wire material: braided wire
