【Safety USB Power Cord】This water pump is USB DC 5V 1-3W. Flow rate: 200L/H. The biggest advantage is that it does not risk accidentally injuring a person or pet from leaking electricity. Ultra Quiet Design The reliable and durable motor does not produce much noise, even in the bedroom, the aquarium water pump can also provide you with a quiet environment. EASY TO USE No need tools to detach, easy to separate, easy to clean, and just plug in the power supply for quick water drainage. This submersible pump is designed for fountains, small and medium aquariums, fish tanks, ponds, table fountains, water gardens and hydroponic systems. Water Flow Control:Fountain pump designed with adjustment knob, can adjust the water flow , the maximum flow rate can be up to 200L/h. It can raise the water column up to 0.8-1 m. 【Mini Size】This powerful but small size water pump is easy to hide and conceal. Dimensions: 40 x 38 x 30 mm. 3 powerful suction cups at the bottom of the pump help hold it in