Item Type: Solar Powered Air Pump Product Model: AP007 Solar Panel: 5V / 1W Battery: 3.7V / 3600mAh lithium battery. Cycle life 500 times Charging Time: Solar charging is about 20 hours. USB charging is about 5 hours. Air Pump Rated Voltage: 3.5V Air Pump Maximum Current: 150MA Air Pump Shower Sound: 1. This product is an electronic product. The main part of the aerator cannot be placed in water, and the diversion holes cannot be blocked.2. This product is a solar product. Please point the solar panel face to the sun to ensure that there is no obstruction between the solar panel and the sun. The charging speed is related to the intension of sunlight. Regularly cleaning the dirt on solar cells can improve the charging efficiency. 1Widely used in a variety of ornamental fish, aquariums, fish farmers, company fish tanks, etc. 2Especially suitable for emergency aeration during power outages, as well as aeration functions for wild fishing and a small amount of aquatic transportation. 3The internal circuit adopts imported single-chip intelligent control, which has the characteristics of constant voltage and constant current charging, overcharge and overdischarge protection, and high safety coefficient. 4Small size, low noise, large air volume and long life. 5This product adopts solar energy + AC charging, using pure copper movement, built-in high-quality lithium battery, cycle life up to 500 times, full charge can be used continuously for about 15 hours.