Specification:Item Type: Solar Air PumpSolar Panel Power: 6V 2WPump Power: 0.3WMaximum Bubble Flows: 0.8L/minAir Volume: 0.8L/minMaximum Water Depth: Approx. 1m / 3.28ftPower 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 ManualNote: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.