Feature: 1. Safer Working: The solar air pump has low working noise as well as large air volume to ensure efficient oxygen inflow. 2. Reliable Work: Comes with overcharge and over discharge protection for stable constant voltage and current charging. 3. Practical Use: Widely applied in aquarium, family fish tank, and so on, especially suitable for emergency oxygenation. 4. Smart Setting: 180 degree adjustable panel can absorb enough solar energy, you can fix it on the wall or in the ground. 5. Using Tips: Put the air stone in the water, then this solar air pump will start working in seconds under full sunlight. Specification: Item Type: Solar Air Pump Solar Panel Power: 6V 2W Pump Power: 0.3W Maximum Bubble Flows: 0.8L/min Air Volume: 0.8L/min Maximum Water Depth: Approx. 1m / 3.28ft Power Supply: Solar powered, no batteries required. The solar panel directly absorbs sunlight to work. No power storage function. Works with sunlight and stop working without sunlight. . Package List: 1 x Solar Air Pump Main Body with Solar Panel3 x Support Bracket1 x Air Tube1 x Air Stone3 x Screw3 x Wall Plug1 x User Manual Note: This product uses a direct drive air pump, which can continuously increase oxygen only when the sun is full. Oxygenation may not be given or may be given intermittently when sunlight is not sufficient. In addition, since the efficiency of solar panels is affected by the light, the effect of oxygenation is also affected by factors such as weather, season and location.