Manufacturer: Caldwell Shooting Supplies 497-700
Caldwell E-Max Electronic Hearing Protection Earmuff Polymer Green NRR 25.
Standard profile E-Max hearing protection combines great circuitry with a standard earcup for better protection. The two microphones in the E-Max amplify sounds below 85 decibels, which amplifies normal communication, range commands, and environmental sounds. Above 85 decibels, the microphones shut off for a split second to protect the shooter's hearing.
Two microphones - one in each cup - give the user true stereo sound and allow the user to identify the directional source of a sound.
Power source: Two AAA batteries (not included)