brand new and high quality. Features: High PerformanceThe submersible powered via USB, make the still water become flowing water, provides a better living environment for the fishes Adjustable Water FlowWith a adjusting knob adjust the water flow rate, so there will no water flow rate is too high or low problem Convenient USB PlugNo longer the traditional plug, but the applicability wider USB interface, can plug to almost everything with USB interface( Power bank, Laptop, USB socket and etc) Submersible Water PumpDC3.5V - 9V, Submersible centrifugal water pump, two suction cups on the side can be installed vertically or horizontally Mini SizeMini water pump, size: 39mm x 38mm x 28mm (L x for W x H), keeping and rearing tanks or small water features where reliable water conveyance, circulation or flow is required Specifications: Material: plastic Color: Black External size: 39mm x 38mm x 28mm Quantity: 1 pc (other accessories demo in the picture is not included) Note: No retail package Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x water pump submersible