Features: Solar Powered Air PumpThe solar air pump is suitable for fish tank, small pond, aquarium, etc., which helps restore the oxygen level in water to keep the fish and pond life. Solar PoweredWith a 3W 5V solar panel, the solar oxygen pump has no external battery, so its not only easy and safe to use, but also energy saving. With USB output interface, you can use the solar panel to charge your smartphone also. Automatically WorkThe solar air pump for fish pond will start automatically when bright sunlight shines on the solar panel directly without any shadow. As the power of the solar panel is depended on the sunlight, the air pump is affected by weather, seasons, places, etc. With 2 Air Bubble StonesWith 2 air bubble stones, the solar air pump can increase oxygen level of the fish pond quickly, keep pond clean and keep fish more active. Matters Need AttentionTo make sure the 2 air stones to work, please let them about a same depth (better not too deep). Specifications: Solar Panel Power: 3W Solar Panel Voltage: 5V Solar Panel Working Current: 0-600mA Solar Panel Output Interface: USB Solar Panel Size: 16 * 12cm/ 6.3 * 4.7in Air Pump Power: 2W Air Pump Cable Length: 1M Oxygen Pipe Length: 1M * 2 Packing List: 1 * Solar Panel 1 * Air Pump 2 * Oxygen Pipe 2 * Air Stones 3 * Connectors 1 * Hook