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DF-3 Noise Reduction Monitor Earphone,
Hearing Protection and Superior Environmental Perception,
Instantaneous Acoustic Shock Protection Exceeding Pulse Noise170Decibel,Ergonomic design,
Comfortable to wear in ballistic helmet,Including domestic productsQGF03Type I bullet-proof helmet, U.S. ArmyACHLightweight helmet andMark7。
It can automatically adjust the sealing between earphone and cheek according to the shape of human face.
It provides users with reliable hearing protection, clear sound quality and high perception.