Built in active noise reduction function, users can hear the ambient sound. Harmful pulse noise can be immediately reduced. Voice menu and adjustment button are provided to control the sound level of active noise reduction restoration, balancer, adjustable restoration time, equalizer, adjustable external input volume and external input mode. The battery life is about 1000 hours. The earmuff will send out a low battery warning signal before the low battery automatic shutdown.

Many high decibel working environments seriously affect the hearing safety of workers, so operators should make reasonable choices according to the actual site environment. Guaranteed sound insulation earmuffs can reduce the possibility of damage to operators' hearing. Sound insulation earmuffs can be classified into independent sound insulation earmuffs and sound insulation earmuffs with hard hats according to their appearance. Sound insulation earmuff is a product that can significantly reduce noise and effectively protect ears from hearing. It is widely used in factories, airports and other places with strong noise.