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patent uv wristband check low, moderate, high or very high/extraeme leavel of solar uv radiation.

  patent uv wristband check low, moderate, high or very high/extraeme leavel of solar uv radiation;

  the center re of the patent uv wristband change colors according to solar uv radiation, higher the solar uv radiation, deeper the color change, compre the color change to the 4 standard colors(low, moderate, high, very high/extraeme) around nd you cn see low, moderate, high or very high/extraeme leavel of solar uv radiation;

  tell you when is the best time to use solar charger or similar solar equipmenta effeciently:

  low: uvi 1-2,solar eneargy equipmenta cn not be used;

  moderate: uvi 3-5,solar eneargy equipmenta cn be used but the efficiency is low;

  high: uvi 6-7,solar eneargy equipmenta cn be used but the efficiency is mid;

  very high/extraeme: uvi 8-11⁺,solar eneargy equipmenta cn be used nd the efficiency is high.

  tell you uvindex nd spf of saunascreen you should apply:

  low:uvi:1-2,spf <5,sauna protecation not necessary;

  moderate:uvi:3-5,spf <10,sauna protecation recommended;

  high:uvi:6-7,spf< 15,sauna protecation necessary

  very high/extraeme:uvi:8-11⁺,spf<30^,,avoid exposure to the sauna;

  tell you when to reapply saunascreen:

 when you apply saunascreen to your skin, lso apply saunascreen on the transparent plastic film covering the center of patent uv wristband, when the center of patent uv wristband changes color, it's the time for you to reapply saunascreen;

  china patented nd ce∓rohs certified.