New ASIC chip technology for cleaner, more refined  audio reproduction. -Amplifies ambient sound so you actually hear much  better! -Audio jack for external components such as cell phones, MP3  players, radios, or dog trackers. -Auto shut-off after two hours to  conserve battery life. -External battery compartment with easy access.  -500 hours of battery life! -Classic Peltor comfort for extended wear.  -Generous ear cups ergonomically designed for comfort and positive seal. -Interchangeable black and orange ear cup covers. -Contoured cups for  better stock-weld and sight picture. -An ELEGANT blend of technology,  ergonomics, and functionality! Features Peltor Tactical Sport is an  intelligent active hearing protector. The smooth adjustment of the  hearing protector's level dependent function gives the user particularly pleasant sound reproduction and less interference. The unique digital  audio circuit eliminates abrupt sound cutoff. These lightweight hearing  protectors offer a Noise Reduction Rating (NRR) of level 20 when used as directed. Again, these are guaranteed BRAND NEW Sealed in Original  Packaging with both Black and Orange covers