1Use high-sensitivity air duct and transparent silicone earmuffs to reduce electron radiation. 2It adopts retractable design and built-in noise reduction compression sponge, it can also adjust the size to make wearing more comfortable. 3No wind noise interference, placing on the small sensor of the working throat. Unlike ordinary headphones, the throat vibration transmits the voice is not sensitive to background noise. 4The earphone/speaker fits your ear comfortably and is especially easy to keep talking. Plastic earphones fit into the ear canal comfortably. 5Make a sound through the throat vibration instead of the microphone. Provides exceptional durability, reliability and performance in a low profile environment. U94 military-grade tactical PTT, transmits sound through the radiation resistant and easy to conceal transparent air duct, using the throat vibration vocal walkie-talkie headset.Features:1. Use high-sensitivity air duct and transparent silicone earmuffs to reduce electron radiation.2. It adopts retractable design and built-in noise reduction compression sponge, it can also adjust the size to make wearing more comfortable.3. No wind noise interference, placing on the small sensor of the working throat. Unlike ordinary headphones, the throat vibration transmits the voice is not sensitive to background noise.4. The earphone/speaker fits your ear comfortably and is especially easy to keep talking. Plastic earphones fit into the ear canal comfortably.5. Make a sound through the throat vibration instead of the microphone. Provides exceptional durability, reliability and performance in a low profile environment. 6. The lightweight neckline design makes it comfortable and easy to use. With the highest quality transparent sound tubes, people around you are hardly aware of it, which is ideal for monitoring and security of airports, casinos, paint-balls, conference and concert crowd control, and other work environments that require careful communication.7. The throat microphone is ideal for sports such as high noise and fast moving environments. It's perfectly suitable for high noise and extreme sports like skiing, cycling, hiking, running, etc.Specification:Material: ABSPTT: U94 tactical PTTHeadphone plug: NATO headPTT plug: K plugHeadphone cable length: 70cmPTT line length: 90cmThe neck part is extensible: YesPTT clip: YesSuitable models: It can match NATO head walkie-talkie equipment without using PTT, it can match K-plug walkie-talkie equipment with PPT.Package List:1*Headphones1*PTT1*Replaceable ear-buds