Ultra Quiet Design & Perfect Motor: The relible and duarable motor does not produce much noise, giving you quiet environment. It can elevate column of water up to 2.6ft ( 0.8m). (Make sure to connect a water pipe to the smallest nozzle , make sure the joint sealed securely and tightly). Adjustable Flow Rate: Designed with a adjusting knob, allowing to adjust the water flow rate, the maximal flow rate can be up to 80GPH(300L/H). Detachable & Cleanable: No need any tools to detach it, easy to seperate, easy to clean. Compact & Mini Size: The mini size makes the pump easy to hide or disguise in the water. Suction cups is great for mounting onto the glass surface. Dimensions:1.87in x 1.68in x 1.24in (47mm x 43mm x 30mm). Multifunction & Two Nozzles: This submersible pump is designed for small to medium size aquarium, tabletop fountains, water gardens and hydroponic systems. Equipped with two nozzles, one is 8.5mm diameters, the other is 13mm, providing different water flow effects.