Designed for the rangemaster/instructor, or any application in a high noise-level environment, the Premier Rangemaster has an adjustable headband with a soft cushion for all-day comfort. Ideal for indoor or outdoor shooting ranges, demolition, heavy equipment or any ambient noise level situation, Advanced Hearing Products' electronics are set to compress (reduce) loud noise to below 85 dB at maximum volume and can be adjusted to below 70 dB by lowering the volume. These electronics are installed in the hearing protection cup that comes with an NRR 26.