Electronic, fully submersible aquarium heater is great for freshwater tanks, saltwater tanks, and terrariums. Modern, flat design features a shatterproof case and a one-touch system that is easy to setup. Advanced electronic thermostat is accurate within a plus/minus range of 0.5 degrees. The LED display shows both the set temp and aquarium temp simultaneously. Built-in thermal protection circuitry shuts down before it can overheat for supreme safety and reliability. Keep your tank water at a stable temperature with the Cobalt Aquatics Electronic Neo-Therm Pro Submersible Aquarium Heater. Giving you “one touch” control in a modern, sleek package, this aquarium heater is made for supreme safety and reliability. The advanced thermostat is accurate within a plus/minus range of .5 degrees, and the LED display reads both the set temp and the tank temp simultaneously. A built-in thermal protection circuity shuts down the heater before it can overheat, and the shatterproof casing is virtually indestructible.