Full or Partial Refund,if the item is not as described
The Aqua Oxygen Pump uses pure copper core and high quality lithium battery with cycle life up to 500 times. It has the characteristics of small volume, low noise, large air volume and long life, and it can work for 24 hours if fully charged.
The internal circuit is controlled by single chip microcomputer. Its features include constant voltage and constant current charging, overcharge and over discharge protection, low power alarm and high safety.
It is widely used in garden ponds, aquariums and fishing, especially for emergency oxygen increase during power outage.