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Instructions:1. Suck the part you want to do (acupuncture point), press 2-3 times with your fingers in the vertical direction, the recessed part in the middle makes the gas inside the suction cup naturally adsorbed.2. After using it for a period of time, press 2~3 times to adjust the suction strength, so you can bear it and feel comfortable.3. If you want strong adsorption force, absorb several in the same place or press several times.4. When resting, driving, going to work, doing housework or studying, it can be used anytime, anywhere, simple and easy.5. The appropriate time for each use is about 5-10 minutes.