Feature: 1. [3 WORKING MODES] The solar oxygen pump has high grade, low grade, intermittent, to better meet all your needs. 2. [METAL STAND] The metal stand adjusts the angle of the solar panel so that it can be in the sun most of the time. 3. [LARGER SOLAR COLLECTOR] 15W power, larger power rating than other solar air pumps, more power and circulation. 4. [EASY TO SET UP] This fish tank solar aerator does not require any wiring, and is energy saving and environmentally friendly. 5. [KEEP CLEAN] Solar powered oxygen pumps help keep outdoor ponds clean and optimally oxygenated, non toxic to fish, frogs and other aquatic life. Specification: Item Type: Solar Oxygen Pump Material: ABS+Aluminum Alloy Size: Approx. 35 x 23.5cm/13.8 x 9.3in Battery Type: Lithium Ion Battery Battery Capacity: 4400mAh (Included) Mode: High Grade, Low Grade, Intermittent Control Mode: Switch Control Working Hours: 22H 55H 110H Maximum Water Depth: Approx. 1m/3.3ft Solar Panel Power: 15W Working Voltage: 15V. Package List: 1 x Solar Panel1 x Aluminum Alloy Frame1 x Pump4 x Air Stone2 x Hose2 x Long Screw2 x Short Screw2 x Clip Screw2 x Hose Tap1 x English Manual Note: 1. This product is an electronic product, the part with battery should not be placed in water, and the diversion hole should not be blocked.2. This product is a solar product, and the charging speed is related to the sunlight. Regularly cleaning the dirt on the solar cell can improve the charging efficiency.3. Please ensure that the solar panel is directly exposed to the sun, there is no obstruction in the middle, and it cannot be turned away from the sun.4. For products that can store electricity and adjust high and low levels, it is not recommended to continue working at high levels for a long time.5. Please allow some errors due to manual measurement.