[Solar Powered] Solar powered, no electricity required, just the sun, an energy-saving and environmentally friendly product. [Working Mode] The oxygen pump works for 10 seconds and stops for 10 seconds. It is recommended to install it in a small family pond and a small area of the pond to increase the oxygen content. [Easy to use] Connect the pipe and the air stone, put it into the water, the aerator The pump floats in the water and works. [Low noise] Stable and quiet oxygen pump, the volume is less than 60 decibels and the air flow is 0.8 liters/minute. [With battery] Built-in 3.7V 2200mAh lithium battery for energy storage, so the oxygen pump can work even at night