The Simple Deluxe Aquarium Titanium Fish Tank Heater is a durable and reliable heater that is perfect for keeping your freshwater aquarium warm. Made of high-quality stainless steel, this heater is rustproof and explosion proof. With a precise temperature control system, it can accurately display the temperature and keep the temperature within +/-1.8 degrees Fahrenheit. The touch-button controller adjusts the temperature without getting your hands wet, and the heater is waterproof and full submersible.