(as of May 23,2022 09:03:32 UTC – Details)
Adjustable size for comfort wearing. Applicable head circumference 54-62cm/20-24.4inch
Simplified Noise level Reduction of 27db(SNR),Noise Reduction Rating of 21 db(NRR),the protection comes from instant blocking of any noise above 90 dB.
Runs on 2 AAA Batteries (not included) with waterproof battery cap.
This headphone could be used with tactical helmet,fits under PASGT, MICH & ACH helmet systems