UV Bracelet Watch wholesale china

This UV bracelet with 3D effect, have clock form. The central part is made in photosensitive material and change the colour with the intensity of the UV radiation;
In order to know the UV index, will be enough if you compare the colour that are in the central part of the quadrant with the 4 colours that are around;
The 4 colours indicator go from the clearest to the darkest in function of the minus or greater intensity of UV rays:
-Feeble intensity : UV index 1-2 (The protection is not necessary);
-Mid intensity: UV index 3-5 (is necessary the protection: put a t-shirt, sun glasses, hat and sun protection);
-High intensity: UV index 6-7 (is necessary the protection: Put a t-shirt, sun glasses, hat, sun protection);
-Very high / Extreme intensity: UV index 8-9-10 / 11 + (avoid to be outdoors).
-Product Material: Color Changing PVC