This unique product offers superior noise-blocking (NRR of 33dB) performance in a reusable, high-end earplug. Its enhanced contoured shape is easy to insert and the proprietary material offers superior long-wearing comfort, delivering solid performance that you can depend on. The patented Impulse Filter Technology, automatically engages to protect hearing but allows normal ambient audio to pass through. Great use for protection against single shot, explosions, automatic rifle fire, artillery, impulse & impact noise. Additional Information Helps guard against hearing damage caused by automatic fire and single gun shots, artillery fire and explosions, reducing them to safe levels, less likely to cause long term damage. Automatically engages to protect hearing Still allows for ambient audio Proprietary material for long wear comfort Includes key chain aluminum transport/storage case No batteries required Two sizes of ear inserts included (one pair of filters) EC TYPE-EXAMINATION CERTIFICATE according to Article 10 of Directive 89/686/EEC PZT GmbH, An der Junkerei 48F, D-26389 Wilhelmshaven, Germany Recognised as Notified Body of the Federal Republic of Germany by "Zentralstelle der Länder für Sicherheitstechnik - ZLS" Notification Body Number: 1974 Registration No. - Version: 381708
