Noise Reduction Rating is 25 decibels (when used as directed). The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30. (Higher numbers denote greater effectiveness.)
Requires 2 AA batteries (not included).
Made in China
For applications which loud noises can be hazardous to hearing such as, power tools, hammering, chain sawing, grinding, sanding, heavy machinery, etc...
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