Driew 3W DC 3.5-9V USB Water Pump with Power Cord, Solar Mini Submersible,Brushless,Waterproof (USB Water Pump) The shell is made of high-quality reinforced ABS,so it is durable Unique resin potting, good insulation properties,100% waterproof,amphibious design Equipped with water flow control device, can free flow control Low noise (less than 35dB), low power consumption, small size and high efficiency It is great for aquarium, fountains, spout and hydroponic systems