【Solar】 Solar energy, no electricity required, just sunlight, 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 small household ponds and small area ponds to increase oxygen. [Easy to use] Connect the hose and air stone, put it in the water, the aeration 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 volume is 0.8 liters/minute.