Small but powerful, can be used for aquarium, fermentation, brewing or . Easy to use, read. The temperature value is clear and eye-catching. This can display the temperature of the fish tank in real time, ensuring that your pet fish live in a comfortable temperature. Features - Color: Black and white. - Material: PET. - Size: 5.00 x 5.00 x 1.00cm/ 1.97 x 1.97 x 0.39 inch. - Suitable for wine bottles, baby bottles, fish tanks, bath water, you can get the accurate reading. - Green color represents temperature, blue color represents a bit lower temperature, brown color represents a bit higher temperature. - The strong adhesive hold it firmly on the surface, so it can’t be used after you . - Do not place the temperature too high, do not measure the boiling water temperature, also do not fold strip for storage. - These adhesive strips are easy to reay, celsius and fahrenheit system display. - The material is waterproof, the will change color depending on the temperature of the touch surface. Package list: 2 x temperature stickers