* Solar oxygenatoris driven by sunlight, energy saving and environmental protection, which does not require additional batteries and plugs
* 120 degrees foldable solar panel, you can choose the best angle according the sunlight
* Built-in 2200mAh high capacity battery, it can work for a long time up to 20 hours once it get fully charged, meanwhile, this air pump can be charged by USB cable
* Designed with the light indicator, let you know the battery status
* Internal circuit adopts imported single-chip microcomputer intelligent control, support constant pressure and constant current charging, overcharge discharge protection and low electric alarm, safe to use