A. High Power and High Head: The maximum head can reach 6.56 feet. It is equipped with a 25 - watt motor that has an energy - saving effect. Here, the head refers to the maximum height that the water rises after connecting the water pipe to the nozzle (ensure the connection is tightly sealed). B. Water Flow Control: There is an adjustable knob to control the water flow. You can obtain the required water pressure as needed. The maximum flow rate is 400 gallons per hour. C. Dimensions: The product size is 2.3×2.8×3.2 inches. D. Suction Cups and Power Cord: The power cord is 5.9 feet long, which facilitates installation. There are 4 suction cups at the bottom of the fountain pump, which help to fix the pump body. It can be fixed vertically or horizontally at a suitable position in the fish tank. E. Ultra - quiet Design and Dual Nozzles: It is equipped with two nozzles of 0.51 inches and 0.62 inches. The motor creates a quiet environment. The threaded connection makes the connection more stable. The impeller shaft is made of stainless steel, which has a long service life and is corrosion - resistant. F. Wide Application: It can circulate and aerate the water, which is appealing to fish or turtles. This submersible pump is suitable for aquariums, fountains, spouts, hydroponic systems, etc.