TS-B1

Foldable heanband speaker with omni-directional microphone(using USB plug)
 
Speaker
Driver Units:  40mm
Frequency Range: 20-20,000Hz
Sensitivity: 116+-3dB at 1000Hz
M.P.O. : 5mW
Plug: USB
 
Microphone
Omni-directional
Sensitivity    -34-+4dB
distortion    <5% at 1KHz