Feature:
  -- Detachable transparent acoustic tube.
  -- Integrated lapel PTT and MIC ,good key feel and sound expresstion.
  -- Easy and convenient to wear.
  -- Suitable for various two way radios with changeable plug.
Speaker:
  -- Dimension (mm): ￠15（independent speaker）.
  -- Sensitivity: 109±4dB.
  -- Impedance: 220Ω.
  -- Rated output power: 0.5W
  -- Peak power output: 1W.
Microphone
  -- Dimension (mm): ￠6*5.
  -- Sensitivity: -38±3dB.
  -- Frequency: 1kHz.
  -- Impedance: 2.0V/2.2KΩ.
  -- Operation voltage: 1-10V
Wire
  -- Dimension (mm): ￠3.0+2.0mm/￠2.6+2.0mm/L=1000+600mm
  -- Durable Temperature : -40～100℃
  -- Material: PU80A