Adjustable aquarium heater, 100W mini aquarium heater with LED display, suitable for aquariums with constant temperature below 3.5cm

Safety Guarantee: The explosion-proof quartz glass shell is double-sealed, explosion-proof, and corrosion-resistant. Prevent your fish or turtles from being injured by touching the heater. Low Usable Water Level: The aquarium heater can be used with a 3.5cm water heater designed for fish and turtles. External Control Unit and Built-in Thermometer: The external touch controller makes it easy to adjust the temperature and switch units without getting your hands wet. The LED digital display clearly and accurately shows the water temperature in real time. Overheat Protection: It automatically shuts off in case of overheating. The aquarium heater is equipped with an intelligent constant-temperature heater, which is multifunctional and provides your fish with a safer and more comfortable environment. NOTE: The aquarium heater should be fully submerged in water. Never leave the water. The heater must be fully submerged to turn on.