[Two Modes]Built-in 2200mAh battery, low gear for working 16h, low gear intermittent for working 32h. [Easy to Install]The solar aerator pump has a ground plug, just stick it into the ground. [Adjustable Angle]The solar panel angle can be adjusted to receive the sunlight most sufficiently. [Solar-powered]The use of solar energy makes it eco-fendly, and maintenance-, and solar power is much safer for your kid. [Widely Applicable]0.8L/min a , suitable for many kinds of containers, such as small to medium-sized ponds, outdoor fish tanks or water reservos, etc. Strong air stone .