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 PumpMaterial: ABS, SiliconeColor: WhiteSolar Panel: 5V/1.4WAir Pump Power: 3V/0.5WAir Pump Output: 0.3L-0.9L/minLow Battery Indicator Voltage (Flashing Green): 3.3VFull Power Voltage Indication (Bright Red): 4.0VOvercharge Protection Voltage: 4.2VBattery Type: Lithium Battery (Delivered with Inbuilt Battery)Battery Model: 18650Battery Capacity: 2200mAhSize: Approx. 13 x 5 x 8cm / 5.1 x 1.9 x 3.1inWeight: 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 ManualNote:Shipped with inbuilt battery.