Aquarium Thermometer adopts LED screen to display temperature, LED can provide wide viewing angle and the color is saturated, it is easier to read the data no matter day or night. Green environmental protection and energy saving. No need for a probe with wire, the digital thermometer with a high-precision temperature sensor on the back can be directly pasted on the outside of fish tank, cordless design, no messy wires in the water, providing a clean and safe environment for fish, touch the button to display the temperature. Tank Thermometer Aquarium just needs to tear off the adhesive and the water level on the outside of the tank. The thermometer tank fish built-in 3V battery button, the battery is long-lasting. Mini design, easy to use. Digital thermometer is suitable for different water types such as water, tap water, salt water, sea water, etc., to provide the most comfortable water environment for your . Wireless safety temperature measurement.Wireless design, with no messy wires in the water, helps to keep the fish tank clean and safe. The smart thermometer can be applied to water, tap water, salt water, sea water, and other different types of tanks, so that your pet has the most comfortable water temperature environment, under your careful care of healthy growth. Material: ABS colour: blue Package Contents: 2 x Aquarium Thermometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.