1Made of high quality plastic material, eco-friendly, durable for long term use. 2Adopt advanced mute technology, which is quietly operated by optimizing the components of the submersible pump. 3Has electric leakage protection and good insulation, safe and high temperature resistance. 4The use of ceramic rotor, more energy-saving and reduce noise, with long service life. 5Strong suction cup design, can be firmly fixed at the bottom of the aquarium.