You will receive: The package contains 3 pieces of blue and transparent digital aquarium thermometer; you can put it in the fish tank at home, or store it in the rain Temperature range: The measuring range of the aquarium thermometer is between -58 degrees Fahrenheit and 158 degrees Fahrenheit, allowing you to use it under most temperature conditions. With suction cup: The fish tank thermometer is equipped with a suction cup, which can be fixed in the position you want to fix, and you can also adjust its position to meet your needs. Waterproof function: The glass container thermometer is made of ABS material, which is waterproof, strong and practical, so that the thermometer is completely immersed in water, making the temperature measurement more accurate Easy to use: This amphibious thermometer is easy to use, you only need to find a suitable position in the fish tank and fix the small suction cup in the position to be installed.