[5-speed Powerful Adjustable Air Pump]: This oxygen air pump is developed by newest stylist. By touching the controller, you can easily adjust the airflow from 1 to 5. Make sure your aquarium or hydroponics has enough water circulation… [ Ultra-quiet and compact]: A special high-tech muffler design is adopted, which makes it particularly quiet at home. [Wide range of applications and simple operation]: With this air pump, you can match other aquarium components, such as sponge filters, round air stones… It is suitable for freshwater or water aquariums of sea and hydroponics. Installation is simple, no additional tools are required, and it can be installed anywhere in seconds. [Lasting Warranty]: This air pump The white aquarium is made of high quality materials, equipped with a durable motor and designed for long term use.