NFESOLAR Solar Air Pump 2.5W with Battery Storage for Medaka Fish

Please note that the second photo shows everything included in this shipment. The stand and screws are missing.
I used it by attaching it directly to the balcony railing without using the stand.
The product is in good working order and can be used without any issues.

Product Description Below

[Zero Electricity Bill with Solar Power & Battery Operation] Built-in 1500mAh large capacity battery allows for automatic operation using solar power during the day and stored power at night. It's eco-friendly and economical, with no electricity costs. Can be used for 24-48 hours on a full charge.
*Please note that insufficient charging may affect nighttime operation.

[3-Stage Adjustable Aeration Modes] Equipped with 3 modes: Strong (green light), Weak (blue light), and Intermittent (light blue light). From medaka biotopes to garden ponds, fish farms, and aquariums, you can provide optimal oxygen supply according to the organism and environment.

[Easy Installation and No Wiring Required] The solar panel and pump are integrated, eliminating the need for any wiring. Easy to assemble and ready to use immediately. The pump unit is detachable, offering high flexibility in installation layout, making it ideal for outdoor use and fishing.

[Improved Water Quality with High-Efficiency Oxygen Supply] Generates a large amount of uniform, fine bubbles with a dedicated airstone. It efficiently increases the dissolved oxygen concentration in the water, helping to improve fish survival rates and promote growth in hydroponics. It also provides peace of mind for transporting and storing live fish.