[Two modes]Built-in 2200mAh battery, low speed for 16h working, intermittent low speed for 32h working. [Easy to install]Solar Oxygen Pump, the solar aerator pump has grounding, just stick it in the ground. [Adjustable Angle] The angle of the solar panel can be adjusted to receive enough sunlight. [Solar Power] The use of solar power makes it environmentally friendly and maintenance-free, and solar power is much safer for your child. [Widely Applicable] Solar Oxygen Pump has a volume of 0.8L/min airflow, suitable for many types of containers, such as small to medium-sized ponds, outdoor aquariums or water tanks, etc.