It has a low noise and frequency sounds, which can help to improve sound clarity

The muffs have a 300 mAh rechargeable lithium battery

The muffs can last up to 80 hr on a single charge

The muffs have a USB charging port that allows you to easily charge them with a USB cable

The muffs have full dynamic range HD speakers that provide clear and balanced sound

The muffs use sound activated compression to reduce loud noises while still allowing you to hear important sounds, the compression reacts in 0.02 sec, which means it can reduce loud noises quickly and effectively

The muffs have a 3.5mm audio jack that allows you to connect them to a smartphone, MP3 player, or other audio device

The muffs come with a USB charging cable, so you can easily charge them when you need to

The muffs have a sound dampening composite rubberized housing that helps to reduce noise levels

The earmuffs have a noise reduction rating (NRR) of 21 dB, this means they can help reduce loud noises by up to 21 dB, which is the equivalent of a power saw or a lawnmower