Earmuffs 3m Peltor Protac Iii

With a built-in active volume function that amplifies weak ambient sounds while attenuating loud ones. Easy to use the buttons are easily accessible and logically positioned. The shells are extra roomy to provide plenty of space for the ears. Operating time approx. 270 Hours. Runs on two 1.5 V aa batteries.- Frequency: 4000hz- mean attenuation: 38,7 db- standard deviation: 3,8 db- expected attenuation: 34,9 db- weight: 290 g

With a built-in active volume function that amplifies weak ambient sounds while attenuating loud ones. Easy to use the buttons are easily accessible and logically