Unused! You can check if your UV light emits UVB rays. *It changes to purple.* Stored at home. Please refrain from purchasing if you are seeking perfection or are overly sensitive. Please read my profile before asking any questions. Shipped via Yu Packet Mini. *I have stock, so I can combine shipping.* It's 200 yen for each additional item. If you are purchasing multiple items, please let me know before you buy. I cannot change the price after purchase. m(_ _)m Premium Material: The quick test UVB sensor is made of high-quality plastic material and can be used for a long time. Quick Test: This reusable card can accurately measure UV rays within 10 seconds. Recyclable Uses: If the card does not turn purple, you need to replace the bulb. When used in 10-second intervals, the card can be used 500 times. Enter the model number. Premium Material: The quick test UVB sensor is made of high-quality plastic material and can be used for a long time.