Ansi S3.19-1974 electronic ear protector ear muff

Name: High quality comfort military electronic ear protector ear muff Models;EE6911 Ansi S3.19 approval   Recommended application: Safety ear protection Military and Police Shooting and hunting sports   Feature: NRR 22dB 2 built-in microphones Amplication 5 time low sound  with two indepedent high frequency directional microphones to catch important information 3.5 mm audio input jack to connect walki-talki and other portabe devices Takes 2 N batteries each side with over 200 hours lifetie Adjustable headband fits for all sizes Soft foam padded ear cushion offers all day use Low profile design and slim clam shape keeps the muff out of the way when shouldering a gun     Attenuation Data:  

Frequency (Hz)	125	250	500	1000	2000	3150	4000	6300	8000
Mean Attenuation(dB).	15.7	17.9	25.5	32.0	36.	41.4	44.7	42.9	42.8
Standard Deviation(dB)	4.4	2.9	2.4	2.2	2.2	3.3	4.1	3.0	3.2

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