New Back Mounted Sports Headset

Product information:
Type: Wireless
Headset type: Headset
How to wear: rear-hanging
Plug type :USB
Frequency response range :20-2000 (Hz)
Impedance :32 (Ω)
Sensitivity :40 (dB)
Distortion rate :0.02 (%)
Wire length :0.5 (m)
Horn Diameter :15 (Φmm)
Material :ABS