Feature: 1. Not only work in the sun during the day, but also at night, no operating costs, easy to install, no tools required. 2. Stay outdoors throughout the year to keep fish and pond healthy, help keep the pond clean and transport algae. 3. In the hot summer, when the water oxygen content is low, use the power of the sun to oxygenate the garden pond. 4. Solar aeration pump is suitable for small and medium pond, sea fishing, and fishing enthusiasts. 5. 2200mAh large capacity battery, small size, light weight, easy to carry, you can take it wherever you want to go. Specification: Item Type: Solar Pond Pump Material: ABS, Silicone Color: White Solar Panel: 5V/1.4W Air Pump Power: 3V/0.5W Air Pump Output: 0.3L-0.9L/min Low Battery Indicator Voltage (Flashing Green): 3.3V Full Power Voltage Indication (Bright Red): 4.0V Overcharge Protection Voltage: 4.2V Battery Type: Lithium Battery (Delivered with Inbuilt Battery) Battery Model: 18650 Battery Capacity: 2200mAh Size: Approx. 13 x 5 x 8cm / 5.1 x 1.9 x 3.1in Weight: Approx. 451g / 15.9oz. Package List: 1 x Solar Aerator Pump1 x Silicone Tube2 x Adapter Tube2 x Aerator Head1 x USB Cable1 x English User Manual Note: Shipped with inbuilt battery.