Earmuffs Professional Anti-noise Ear Protector Sound Insulation Noise Reduction Hearing Protection Ear muffs

3M H10A noise reduction earmuffs NRR: 30dB SNR: 35dB Suitable for noise level: 105 decibels USE Concentrate, protect your hearing, etc. It is a good helper for you to avoid noise interference in your home, bedroom, self-study classroom, travel by plane, factory, construction site, downtown area, etc. It is a good partner for your healthy new life. Effect Designed for extreme noise environments. Double cup design, and double cups are joined together by an inner liner layer to reduce structural resonance. The cup can effectively reduce the high frequency noise in a high noise environment and effectively reduce the frequency noise. Instructions for use 1. Stretch the headband to the “open” position and over the head to cover the ears; 2. Relax the headband and adjust the height of the cup until the headband can support the cup and the ears are comfortable; 3, the cushion of the earmuff should be close to the head, do not leave a gap; 4. Adjust the headband to ensure proper tightening and effectively isolate the noise.