1Keep your hands clean when operating.
2, ear plugs into the rear, gently turn, comfortable, not too tight;
3. earplugs are dirty. They can be cleaned with detergent and dry.
how to identify the good or bad of the earplug
1.The elasticity is too big, the noise proof ear plug expands to oppress the outer ear skin, can cause the unwell of the ear distension, the ear pain and so on; the elasticity is too small, can not be closely contact with the external ear canal, the sound insulation effect is reduced.
2. softness:Softness directly affects the comfort of ear plugs.
3. surface texture:Some earplugs feel sticky, and they can also adhere to the ear canal in their ears. They should try to avoid buying them. The best way to identify is to separate the two earplugs tightly together and separate them again, and see the time they are separated, the sooner the better.
Maximum shape diameter: 14MM;
Net weight: 1.9 grams / pair