Feature: 1. LED DUAL DISPLAY: high definition LED dual display, large screen digital dual display, flashing tips, intuitive and convenient, fast heating speed, try to place in the position of the water flux, so that the aquarium heated evenly. 2. PRECISE TEMPERATURE CONTROL: Aquarium heating rod with super strong suction cup snap, stable fixed heating rod, external temperature control, precise temperature control, power off from water, over temperature protection. 3. PREVENT BURN OUT: The heating rod is completely submerged under water to prevent the rod from burning out, melting the protective shell and other situations that cause unnecessary trouble. 4. REMOVABLE SHELL: Aquarium heater is made of eco friendly materials, no pollution, removable shell, easy to disassemble, say goodbye to inconvenient clean. 5. SLIGHT STATIC ELECTRICITY: The heating rod will work with a slight static electricity (12V or less) belongs to the safety range, please rest assured that the use. Specification: Item Type: Aquarium Heater Material: ABS Purpose: Aquarium Intelligent Digital Display Heater Temperature Control Range: 15℃ to 34℃ Suitable Water Volume: Below 400L Suggested Aquarium Size: Approx. 100-120cm / 39.4-47.2in. Package List: 1 x Aquarium Heater1 x Suction Cup Fastener Note: 1. Please do not bury the heating rod in the gravel and soil at the bottom of the aquarium, because the specific heat capacity of gravel and water are different, which will generate the damage of the heating rod.2. It is not recommended to put the heating rod in the bottom filter, because some bottom filter water level is not enough to submerge the rod, which may generate accidents.