With a built-in microphone and speakers, these hearing protectors let you adjust the ambient noise level to hear normal conversation, or the all-important "Coffee's ready", but attenuate noise above 85dB. They are both safer and more useful than regular earmuffs.
Only 13 oz, they require two AA batteries (not included). Passive noise reduction rating is 21dB.
The pad replacement kit includes two ear cushions and two outer absorbent covers.