RivenAn Portable Solar Power Panel Bank Charger Oxygen Oxygenator Aerator Air Pump Oxygen for Pool Pond Aquarium Fish Tank Using solar panel absorb sunlight and then transfer solar energy into electricity. USB solar panel battery charger for Mobile Phones, MP3, MP4, iPhone, Nokia, etc. Environmental protection: No pullution, no noise, no radiation. Place it under the sun, it can keep your pond oxygenating. Perfect for pond oxygenating, garden landscape, outdoor activities, traveling, fishing, etc.