The Pro Ears Silver 22 have a slimmer design with a padded base; if you are a rifle or shotgun shooter their padded design will rest on your rifle stock and not the shell of the ear cup where scratching can occur. The Silver 22 has the same technologies as the top-of-the-line Pro Ears models with DLSC(TM) military-grade circuit boards, 8-bit Micro-Processor and a Noise Reduction Rating (NRR) of 22dB. The most significant change is built around comfort and quality. The Pro Ears Silver 22 amplifies sound 5x and protects your hearing to a safe 22dB, super sensitive stereo microphones are strategically located for incredible 360-degree situation awareness. Requires 2 AAA Batteries, not included.