Arealer Black Solar Oxygen Pump Fish Tank Oxygenator Aquarium with Oxygen Pipe + 2 Bubble Stones

[Environment-friendly Solar Energy]The use of solar energy makes it environment-friendly, portable and easy to install with no need for wiring, no operating cost and maintenance free, and solar power is much safer for your kid. [Large Air Volume]Stable silent oxygen pump with less than 60 dB low noise and 1.4L/min air volume, suitable for 40-250L container. [Battery Backup]Built in a 7.4V 2400mAh 18650 lithium battery pack for storing energy, thus the oxygen pump working in the night as well. [Evenly Air Distribution]There are 3 working modes can meet your different demands, and two air flow outlets make the air distribution more even and pervasive. [Adjustable Angle]The solar panel angle can be adjusted to receive the sunlight most sufficiently. Perfect for bird bath, small pond, garden decoration, water circulation for oxygen, etc.