The use of transparent air duct airborne acoustic sound is very clear. It can remove more than 90% of the background noise, not afraid noisy. ^^ Large circular waterproof PTT, keys feel good. ^^ laryngeal vibration outgoing sound, noise, including wind around will not spread, it can be used in very noisy harsh environments. ^^ Suitable for hunting, fishing, riding motorcycles, and other working conditions.
^^ How it works: When the use of the vocal cords vibrate to speak, so that the throat due to vibration induced voltage of the microphone element.