The new low-profile E-Max(TM) hearing protection combines great circuitry with a low profileear cup that&';s ideal for shotgun shooters and action shooters. The two microphones in theE-Max(TM) amplify sounds below 85 decibels, which includes normal communication, rangecommands, and environmental sounds. Above 85 decibels, the microphones instantly shut off toprotect the shooter&';s hearing. Two microphones - one in each cup - give the user true stereosound and allow the user to identify the directional source of a sound. The E-Max Low-Profile Earmuffs are now available in pink, to accommodate all the lady shooters out there. Blocks high-level sounds Amplifies low-level sounds Comfortable fit Adjustable volume control Audio input jack Folds compact Stereo Sound Speakers shut down at noise levels above 85dB NRR: 23 Power Source: Two AAA batteries (not included)