Advanced UV sensor, UVI testing value range: 0.0—20.0 level. -Digital LCD display, the precise is 0.1. -Three buttons design, including Set Button, Mode Switching Button and Time Change Button. -Power supply by CR2025 Lithium Battery. -Operating temperature range: 0℃~50℃ -Dimension: 70×36×12 mm

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

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