The Caldwell Low-Profile E-Max Electronic Earmuffs combines great circuitry with a low profile earcup that's ideal for shotgun shooters and action shooters. 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. The E-Max Low-Profile Earmuffs are now available in pink to accomodate all the lady shooters out there. Ear Cup Width: 1.75 - Batteries: 2 AAA (not included) - NRR: 25 dB - Cutoff: 85dB - CE Certified: Yes - Warranty: 1-year warranty against manufacturing defects.