Heavy duty two way radio headset noise canceling a

two way radio walkie takie headset noise canceling headset is made with dynamic microphone and earphone for noisy environment. Durable material & design ,gel earmuffs offer long time comfortable using. Suit for airport, race area and some very noisy location. It is best used in manufactory plants as well. 1. Adjustable Velcro strap: the head strap is releasable and adjustable to different head sizes for comfortable wearing in long hour operations;2. Fully tested under extreme environment: the headset has been tested in 50 degree Celsius and -25 degree Celsius; it has also passed through a humidity test under 95% humidity and 40 degree Celsius.3. Super BIG PTT button: Easy to use when you are wearing hand gloves controlling aircraft or helicopter.