Solar Pond Pump Air Pump Solar Powered Pool Fish Tank Oxygenator Oxygen AeratorFeatures: Three working modes: continuous intermittent power saving mode It contains a rechargeable lithium battery, it can be charged by solar energy or DC AC power, Lithium batteries can also operate automatically for 24 hours in the event of a power outage. 3. 5W solar panel can convert light energy into electric energy, it works better when the sunlight is intenser, it's energy saving and eco friendly to use. Long press to turn on off the air