Importance of Protective Ear Muffs Loud noises can cause permanent hearing loss and even accelerate the process of becoming deaf. Noise levels above 125 decibels for even short periods of time, can cause permanent hearing loss. When exposed to these decibels for longer periods of time the effects are even worse.Noise Reduction Rating (22NRR) Ear Muffs are one of the best ways to protect your hearing from damage. Product Parameters: Material: ABS,Steel frame material;304 stainless steel,WIFI connection Noise Reduction Rate (NRR):22dB Size: Length 23cm, width 15.5cm COMFORTABLE - Padded Head Band and ear cups design lined with soft, comfortable foam cushions providing non-stop comfort for hours around your head and ears. ADJUSTABLE- Design adjustment headband to achieve a full of vertical adjustment for a perfect fit. Self-adjusting cups for a perfect fit giving a good seal against noise,fit children 8 months up to adults. PORTABLE - Compact, standard folding head band add more convenience to carry and makes it easy to toss in a handbag, messenger bag or pocket so you have them when you need them. FASHIONABLE -Attractive, modern and stylish design with rounded, glossy ABS cup shells. Unisex color perfect for both men and women,boys and girls. DURABLE - Industrial grade premium quality surly meets professional high quality standard to achieve the perfect combination of durability and comfort, guarantee withstand a lifetime of repeated use. Package Contents: 1X Safety Ear Muffs Warranty Your Satisfaction 100% Guaranteed
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