Features: Give the aquarium a natural look with the plants waving back and forth, and fish swimming against the current. Move water to help circulate CO2 and nutrients around in the planted tank. Small profile so it doesn't take up much space in the tank and easy to hide. 360° rotation flow directions make it easy to stir up small particles and leftover food to be picked up by the filter eliminating dead spot. Create water movement and agitate the top water increasing the dissolved oxygen for fish and corals to thrive. Easy to install - just suck the cup to the inner wall (must be totally submersed under water), plug in and it works. Totally submersible and oil-free motor to avoid pollution to the living circumstance. Ideal for freshwater tank and saltwater tank. Note: Must be totally submersed under water and do not use with a timer or a controller. Specifications: Length of power cord: 6ft Voltage: 110V-120V / 60Hz Includes: 2pcs Wavemaker