Power-Time Advanced Tactical headset DF-5 is on selling
EN352-1:2002: SNR 28dB ANSI S12.42-2010: peak impluse level 168dB
Tested by US lab Michael & Associates, Inc. which accredited by National Institute of Standards and Technology (NIST) National Laboratory Voluntary Accreditation Program (NVLAP), Lab number 100427
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