DefendEar Convertible (Closed)
DefendEar Lite, DefendEar Convertible (Open), DefendEar Convertible Comm
All Westone Custom Hearing Protection Device Noise Reduction Ratings have been tested and calculated according to EPA regulation 40 C.F.R. Part 211 Subpart B.
NRR data acquired according to ANSI Standard S3.19-1974, Method for the Measurement of Real-Ear Protection of Hearing Protectors and Physical Attenuation of Earmuffs, at Accreditation Program of the National Institute of Standards and Technology.