Feature: 1. Onepiece encapsulation, this product is made of high strength stainless steel which makes it strong and durable. 2. Double encapsulation waterproof design to make sure no leakage and good insulation. 3. The stepwise heating mode can save energy and power and prolong the service life. 4. Knob is in charge of temperature adjustment, temperature error can be fine tuning. 5. With the character of accurate temperature control and fast heating, it is a good choice for many fish tank. Specification: Condition: 100% Brand NewItem Type: Aquarium HeaterMaterial: Stainless SteelColor: As Picture ShownSuitable Type: Fish Tank, Turtle TankFunction: This type of heating bar is different from other brands. The core of the design is to prevent fish from boiling, so the starting temperature will be about 2 degrees lower than the set temperature (only the starting temperature and the stopping temperature are set).So set the temperature about 1 degree higher than the target temperature.. Package List: 1 x Aquarium Heater2 x Sucker Note: 1. The heating rod is strictly prohibited to be used at low water level. The water must be immersed above 10cm/3.9in of the heating rod.2. The stainless steel heating rod is strictly prohibited to be used in seawater cylinder and salt water.