About this item Adopting a mechanically pressurized ceramic motor, stable gas supply, low heat generation, and low noise. The power consumption is only 1W, with a long service life and high energy efficiency. Widely used in outdoor situations such as outdoor fishing, fish transportation, and fish sales, as well as in small and medium-sized aquariums, fish tanks, and small ponds. Small size, light weight, easy to carry, with durable buckle. One package includes two sets of fish tank oxygen pump sets.