WATER FLOW CONTROL -- An Adjustable Knob to control the water flow rate, so you can get just the amount of water pressure you want. Maximum flow rate: 130GPH (500L/H). The impeller shaft is stainless steel for long life span. STRONG POWER & HIGH LIFT -- Voltage:110-120V. Max Lift Height: 2.6ft. 6W high efficiency motor for energy saving. Lift height is a max height the water goes up, after connecting the water pipe to the nozzle (Make sure the joint sealed securely and tightly) 2 NOZZLES & OXYGEN HOSE – 2 nozzles for option: 0.51" water nozzle & 0.51” oxygen water nozzle. The size of the boost oxygen bubbles can be controlled by adjusting air flow at the hose end, providing enough oxygen for your fish. Detachable and cleanable. SUCTION CUP & 5.2FT POWER CORD -- Long enough cord for easy installation. 4 individual powerful suction cups help keep it in place, so you can stick it on the right side of the aquarium, either vertically or horizontally. WIDELY APPLIED -- Circulate and aerate the water, making it more attractive to your fish or turtles. This submersible pump is perfect for aquarium, fountains, spout and hydroponic systems, etc.