Tactical Helmet Headset Shooting Ear Protection Sound Amplification Noise Reduction Ear Muff with Detachable Microphone

Detachable microphone , 2 sides microphone port convenient for right and left use.
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