Features: Accurate Display--Our aquarium electronic Thermometers accurately measure temperatures ranging from 0~60℃. (resolution:0.1℃) LED Screen--Equipped with a LED screen, you can easily read the temperatures. The cordless tool ensures a clean and safe environment for your fish. Wide Usage--Maintain the living conditions for your pet by adjusting the temperature accordingly. Whether you are fish enthusiasts, reptiles lover, our Thermometers is essential tool for ensuring their enviroment. Easy to Mount--installation tool is not required, just remove the tape and stick on the fishtank to use. Note--This product can only be attached to the glass outside the aquarium. Please do not put it into the water, otherwise it will damage the product. Specifications: Component: Plastic Size: Approx.48x48mm/1.89x1.89inch Color: 2 Option Quantity: 1 Pc Package Includes: 1pc Aquarium Thermometers note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. 3.Battery is not included.