1、Widely used in a variety of ornamental fish, aquariums, fish farmers, company fish tanks, etc. 2、Especially suitable for emergency aeration during power outages, as well as aeration functions for wild fishing and a small amount of aquatic transportation. 3、The internal circuit adopts imported single-chip intelligent control, which has the characteristics of constant voltage and constant current charging, overcharge and overdischarge protection, and high safety coefficient. 4、Small size, low noise, large air volume and long life. 5、This product adopts solar energy + AC charging, using pure copper movement, built-in high-quality lithium battery, cycle life up to 500 times, full charge can be used continuously for about 15 hours.