[Solar energy] Solar energy, no electricity needed, just sunshine, 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 in a small family pond, and a small area of the pond to increase oxygen. [Easy to use] Connect the tube and the air stone put it into the water, the aerator pump will float in the water and work. [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 to store energy, so the oxygen pump can also work at night. Product description The oxygen pump works for 10 seconds and stops for 10 seconds. It is recommended to install in a small family pond, and a small area of the pond to increase oxygen. [Easy to Use] Connect the tube and air stone put it into the water, the aerator pump will float in the water and work. [Low Noise] Stable and quiet oxygen pump,