Homvik USB mini pump is a multi-purpose pump that can be fully submersible. the shell is made of high-quality food grade materials plastic, durable enough. It is compact, multi-functional and detachable, perfect for small to medium size aquariums, tabletop fountains, water gardens and hydroponic systems, Also used for DIY cat water dispenser ,Cat Water Fountain etc. Add more circulation to your aquarium and give your lovely fish a near-natural environment. Package List: 1 * Water Pump 1 * User Manual(English) Note: 1. Please keep the pump operate in the water, otherwise would damage the pump; 2. The maximum flow rate might be a plus-minus tolerance; 3. Insufficient power and insufficient frequency would affect the flow rate; 4. The maximum flow rate refers to the flow rate without using a water pipe. If connected with a water pipe, the maximum flow rate would less than the Max. value; 5. If the water sprays out the container, the flow rate would also less than the Max. value; 6. Please clean it regularly in case of debris blockage, the pump would make noises or even make the motor short circuit if blocked by debris.