These hearing protectors, with built-in FM radio tuner, are equipped with an advanced headband that balances and reduces pressure on the ears. Hearing protectors have high stereo sound quality. The earmuffs are individually designed for both the left and right earpieces and fit the shape of the head, which fits perfectly into the ears. Also equipped with Audio Input for 3.5mm (AUX) mp3 players or walkie-talkies.