Uinfhyknd 2 Pin Covert Acoustic Air Tube Mic Microphone - Invisible Earpiece Headset for Walkie Talkie & Two-Way Radio - Perfect for Security, Surveillance, and Discreet Communication

Function: For Mobile Phone,Common HeadphoneSupport APP: NoFrequency Response Range: 30-16000HzIs wireless: NoSupport -x: No: AUXActive Noise-Cancellation: YesSupport Memory Card: NoWireless Type: NoneVolume Control: NoWaterproof: NoCommunication: Wired Number: Covert Acoustic Air Tube EarphoneSensitivity: 102+/-3dBWith Microphone: YesControl Button: YesResistance: 9 ohmStyle: Ear Vocalism Principle: ElectrostaticPlug Type: Typecommunication: wiredfunction: Security Earpiece Headset/for mobile phoneplug type: wiredCondition: and high Impedance: 2.2K ohmsSensitivity: 102 dB, +/-3dBResponse: 20-16000HZ.Transparent flexible acoustic tube microphone inside PTT switch earbud fits snugly to earColour: blackMaterial: ABSsize: 10*5*2CMMicrophone Size: 6.0 X 5.0mmSpeaker DIA: 22MM Length: 1.2m Contents:1* 2 Pin Security Earpiece HeadsetOnly the above content, other are not included.Note: Light and different displays may the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.