Description Color: heise Weight: 20g Product Efficacy: It has many functions, such as measuring ultraviolet radiation, simple and easy to use, and convenient to carry. Features: Measure UV radiation: UV stickers can help users monitor ambient UV radiation levels in real time and remind users of sun protection and skin care. Simple and easy to use: UV stickers are generally easy to use. Just stick the sticker on the skin or object, and the UV intensity will be displayed automatically. Portable and portable: The UV patch is small and light, making it easy to carry and monitor UV rays in the environment at any time. Instructions: Apply the UV patch gently to the selected area, making sure it is tight and flat to avoid air bubbles or creases. After the sticker has been exposed to the sun for a period of time, observe the color change or digital display on the sticker and judge the intensity of ultraviolet rays according to the instructions in the instruction manual. Comment: 1. Manual measurement tolerance is 2-5g. Please accept the difference. 2. Due to differences between different monitors, the image may not reflect the actual color of the object. Thank you very much! 3. SKU color is the color of the product packaging Package contains: 1*Eyeliner