USB Mini Submersible Pump Specifications: Voltage: DC 5V Power: 3W Max. Flow Rate: 200L/H H-Max.(Lift Height): 0.8-1M Power Cord Length: 1.5M Package Included: Water Pump x 1、8mm Nozzle x 1 EASY TO USE No need any tools to detach it, easy to seperate, easy to clean, And simply plug in power for quick water draining. Water Flow Control Fountain pump Designed with a adjusting knob, allowing to adjust the water flow rate, the maximal flow rate can be up to 200L/H. It can elevate column of water up to 0.8-1 M. Safety USB power cord This Water Pump is USB DC 5V 3W Power. Flow Rate 200L/H. It is most advantage is that it does not have the risk of accidentally injurying a person or pet by leaking electricity. IMPORTANT NOTE: The USB Water pump doesn’t come with power supply, The pump must be provided with 5V 2A power to keep long-term stable operation. If used with a solar panel, the solar panel should be 5V 20W or above.As this aquarium pump is submersible, andneed to be put into water fully before power on to avoid the aquarium pumpburning out. Prohibit no-load running. It would shorten its lifespan and leadto making loud noises when running in the air for long time, When changingwater.If the product suddenly stop working ormake noises, which may caused by debris blockage. Please clean it regularlyabout once every two months.Please use socket with stable voltageand keep the motor running within rated power to ensure longlifespan.Insufficient power and insufficient frequency would affect thefountain pump’s flow rate. 200L/H refers to the flow rate without using a pumpwater pipe. If connected with a pump water pipe, the fountain pump maximum flowrate would less than 200L/H.0.8m lift height refers to the heightthe pump can lift water to at the minimum flow rate. At the stable and constantflow rate, the pump can lift water to about 0.8m height.Due to all the pumps need to be professional watertesting by our manufacturer before shipment, if the water pump you received hasa little water, please don't worry, the little water was left from professionalwater testing, it is a normal phenomenon. It is new and normal pump. IMPORTANT NOTE: The USB Water pump doesn’t come with power supply, The pump must be provided with 5V 2A power to keep long-term stable operation. If used with a solar panel, the solar panel should be 5V 20W or above.As this aquarium pump is submersible, andneed to be put into water fully before power on to avoid the aquarium pumpburning out. Prohibit no-load running. It would shorten its lifespan and leadto making loud noises when running in the air for long time, When changingwater.If the product suddenly stop working ormake noises, which may caused by debris blockage. Please clean it regularlyabout once every two months.Please use socket with stable voltageand keep the motor running within rated power to ensure longlifespan.Insufficient power and insufficient frequency would affect thefountain pump’s flow rate. 200L/H refers to the flow rate without using a pumpwater pipe. If connected with a pump water pipe, the fountain pump maximum flowrate would less than 200L/H.0.8m lift height refers to the heightthe pump can lift water to at the minimum flow rate. At the stable and constantflow rate, the pump can lift water to about 0.8m height.Due to all the pumps need to be professional watertesting by our manufacturer before shipment, if the water pump you received hasa little water, please don't worry, the little water was left from professionalwater testing, it is a normal phenomenon. It is new and normal pump.