Features:1. Telescopic Design: Plug size is 7.1mm and suitable for U94 PTT, telescopic design and adjustable to fit neck sizes between 12in and 15in.2. Noise Cancellation: The throat mic headset is able to eliminate most of the background noise at the work site, bringing clear sound quality.3. Principle: The dual microphone transponders are designed on the left and right side, where sound is absorbed through throat vibrations and transmitted to the radio, then converted to recognizable speech frequencies.4. Clear Ear Plugs: Mushroom shaped ear plugs are suitable for long hours of operation, and the ergonomic ear cushion design ensures a good fit for various ear sizes.5. Delicate Tube: Transparent tube and easy to hide, you can conceal the throat mic earphone under the collar, making it less noticeable.Specification:Item Type: Throat Mic HeadsetMaterial: ABS, siliconeSuitable for neck sizes between 12in and 15inPlug Specification: Approx: 7.1mm/0.27in, suitable for U94 PTTPackage List:1 x Headset Microphone1 x Earplugs1 x Headphone CableNote:This headset does not include PTT; the PTT switch is required for operation with a radio.