Features: The thermometers pendulum adsorbs and press the power button to accurately measure the temperature, immediately displaying the temperature. The thermometers switches between centigrade and Fahrenheits degrees. When not in use, you can press the power button to turning off the device, saving energy and power. When the thermometers without electricity, remove thermometers and continue using it after replacing the battery on the back. Suitable for aquariums enthusiasts, breeders, and researcher who is concerned about water quality and healths. Specifications: Dimension:551.4cm/1.961.960.55in Component:ABS Package Includes: 1pc LCD Digital Thermometers note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. 3.This product is integrated thermometers and cannot be placed in water. The battery is detachable