Feature: With Adjustable Knob: The mini submersible water pump comes with an adjustable knob do control and adjust the flow rate. Mini suction cups: mini pump do aquarium with mini suction cups, small and light, it can be easily attached do flat surface, not easy to fall off. Quiet operation: fountain water pump operates quietly and reduces noise, providing you and your pet with a sweet sleep. Application: this aquarium water pump is designed to be compatible with various types of pet water dispensers. Suitable do fresh and salt water. Specification: Article type: mini submersible water pump Material: ABS Size: approx. 36 x 36 x 28 mm/1,4 x 1,4 x 1,1 inches Departure: approx. 8 x 16,5 mm/0,3 x 0,6 inches Plug: EU plug 220-240 V Waterproof: IPX8 Package List: 1 x Mini Submersible Water Pump Note: There are obstacles or dirt in the pump, which will reduce the effect of using the product. If the pump is dirty, remove the pump to clean the dirt. li> Before starting do cleaning the pump, cut off the power supply, remove the front cover and water leaves, use a small brush or running water do rinse the dirt, beware, do not move the pump shaft. li> Before use, make sure the environment is free of contaminants. li> Place the pump in water, the water height must not exceed the pump to avoid water shortage and machine burn. Turn on the power. li> If the failure process is applied, the power supply should be cut off from the water as soon as possible before do renovation. li>