Promotional Gift, UV Tester Key Holder
Silicon Solar UV Tester key holder check the level of Solar UV radiation with the level of low, moderate, high or very high/extreme.
The Silicon Solar UV Sensor bracelet can change colors according to Solar UV radiation, higher the Solar UV radiation, deeper the color change, compare the color change to the 4 standard colors (low, moderate, high, very high/extreme) around and you can see low, moderate, high or very high/extreme level of Solar UV radiation;
Tell you when is the best time to use solar charger or similar solar equipment effeciently:
Low: UVI 1-2, Solar energy equipment can not be used;
Moderate: UVI 3-5, Solar energy equipment can be used but the efficiency is low;
High: UVI 6-7, Solar energy equipment can be used but the efficiency is MID;
Very High/Extreme: UVI 8-11+, Solar energy equipment can be used and the efficiency is high.
Tell you UVIndex and SPF of sunscreen you should apply:
Low: UVI: 1-2, SPF
Moderate: UVI: 3-5, SPF
High: UVI: 6-7, SPF
Very high/Extreme: UVI: 8-11+, SPF
It can also be fluorescent and glow in the dark night, very interesting for people in outdoor activities.
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