HD LED DisplayAquarium Thermometer using LED screen to display the temperature, the LED can provide a viewing angle of up to 160, which not only has a great advantage in the visual range, but also has good color saturation, green environmental andenergy-saving. It can avoid the problem that the value can't be easily read under strong or weak light. Cordless & Touch DesignStick-on Induction Thermometer senses water temperature through a copper nickel-plated probe, cordless design, no messy wires in the water, providing a clean and safe environment for fish.Touch the button to display the temperature,and the aquarium thermometer will enter the sleep state after 5s. If you want to check the temperature again, you can repeat the above action. High Accurate DisplayTank Thermometer Aquarium just needs to tear off the adhesive and stick it below the water level on the outside of the tank. The fish tank thermometer has a reading range of 0-140F and is accurate to 0.9F. Up to 5s refresh speed allows the naked eye to detect temperature changes more quickly. Long Battery LifeThe Fish Tank Thermometer built-in 3V ultra-low power lithium manganese battery, the battery is long-lasting. Mini design, easy to use. Digital thermometer is suitable for different water types such as fresh water, tap water, salt water,sea water, etc., to provide the most comfortable water environment for your beloved pets. Cordless & Sticker DesignNo 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. Wide Compatibility It can accurately measure the temperature of different types of water such as fresh water and salt water. Very suitable for monitoring the living temperature of fish , lizards, turtles and other reptiles LED Screen The 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.