Description: USB Port DesignThe USB port can be connected to computer, power adapter, and other USB devices, convenient to use. micro pump suitable for aquarium fountain.Waterproof & QuietLow noise, energy saving, and low power, perfect for fish tank, Perfect in waterproof performance. Low consumption, long service life and can be used under low voltage, especially suitable for small fish tanks.Premium Quality Made of high quality PP material, safe, eco friendly, good toughness, and durable.Easy to operate with adjustable flow rateIt features an adjustable knob, allowing you to control the water flow rate and pressure.Wide ApplicationCirculate and aerate the water, making it more attractive to your fish or turtles. With high performance, can be used for family landscape, pet water, music fountain, water cooling fan, aquarium equipment, etc. Specification: Material: PP Size Chart: 4cmx4.1cmx2.7cm/1.57inchx1.61inchx1.06inchCable Length: 1.5m/59.06inch Package Includes: 1 Pump Note: Please allow slightly errors due to manual measurement and different monitors.