These Temperature Testing Strips are constructed good material for long-lasting and practical to use. Aquarium thermometer simply pulled the backing off to reveal the adhesive back and applied to the front of your fish tank, aquarium, carboy, jar, and more. Aquarium Thermometers has a longer life expectancy in use, you don't worry about cold weather draining the battery since there is no batteries needed replacing. Features -Color:Assorted Color -Material:PET -Size:9.00X6.00X0.10cm/3.54X2.36X0.04in -Manufactured with , durable and practical to use. -Clear temperature degrees with an easy-to-read screen display. Small size, compact design, easy to use. -The excellent workmanship of our Thermometers Stickers will bring you a good user experience. -Great for aquariums or any place you want to monitor the temperature. -With vivid fish appearance design, you can anywhere you want to taste the temperature through the liquid . Package list: 9 x Thermometers Stickers