& OOTDTY & Adjustable Water Pump is designed fully submersible for both fresh water and salt water. This pump creates a flow of water and aerates the aquarium to simulate the natural environment of an ocean/river. The pump is an indispensable addition to your aquarium, fountain, and more. Submersible Water Pump for Aquarium, Fountain, Fish Pond, etcThe flow rate is adjusted by a knob in front of the pumpWith 3 suction cups at the bottom and for use in water onlyDC: 9-12VDC: 9-12VMoc: 4-5WMoc: 4-5WHmax. : 1.5-2mQmax:500L/h Outlet Diameter: Approx. 8mm Dimension (L x W x H): Approx. 4cm/1.5" x 4cm/1.5" x 2.5cm/0.97" Cable Length: Approx. 140cm/55inch Material: PlasticColor: BlackNote: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!