Active electronic hearing protection. Headphones amplify ambient sounds, but immediately automatically hammering noises above 85 db. Automatic zatlmenie place within milliseconds, so you will not notice. Headphones are available separate volume control and option to disable listening environment. Furthermore, they have the ability to connect an external audio source - transmitter, MP3 player, or an external microphone with 3.5mm jack. The headphones are comfortable to wear, good seals and provide optimum protection against noise.
active listening environment with automatic dimming
