Rubbing fine: the earplug rubbing growth strip, rubbing the more detailed the more easy to wear.
Plug in: Pull up the upper ear and plug the two-thirds of the earplug into the ear canal.
Press and hold: Hold down the earbuds for about 20 seconds until the earbuds inflate and block the ear canal.
Pull out: When you remove the earplugs, gently pull the earplugs out.
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