Features:
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<br />    100% Brand New and High Quality.
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<br />    Soft ear bud to fit snugly in your ear with a clear acoustic tube.
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<br />    With a clip for collar or shirt fastening.
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<br />    3.5mm pin Interfac.
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<br />    Advanced acoustic catheter to provide clear sound quality.
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<br />    Has a noise canceling feature, even noisy signal is not affected.
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<br />    Two parts, Detached double headset PTT to make it easier and subtle.
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<br />    High quality, strong, environmentally friendly PU wire, durable.
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<br />    Suitable for patrol, escort, etiquette, hotels, entertainment and other security people.
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<br />    It can be used to Listen and Speak. 
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<br />Technical Specifications 
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<br />    Speaker
<br />    Dimensions (mm):  16 * 10.5
<br />    Sensitivity: 118dB   3dB
<br />    Impedance: 90 
<br />    Rated input power: 10mW
<br />    Maximum output power: 50mW
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<br />    Microphone
<br />    Dimensions (mm):  6.0   2.7mm
<br />    Sensitivity: -42   3dB
<br />    Frequency: 20-20kHz
<br />    Impedance: 2.2K  at1KHZ 2.0V
<br />    Operating voltage: 1-10V
<br />    Type: Omnidirectional
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<br />    PTT
<br />    Dimensions (mm): 6 * 6 * 3.7
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<br />    Wire
<br />    Dimensions (mm): L = 850 & 290
<br />    Resistant to temperature: -40 ~ 105  
<br />    Material: PU
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<br />Package Includes:
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<br />    1 X Listen Speak Acoustic Headset 3.5mm Ear Plug Earpiece