I got it a year ago, at the end of summer it broke down, and while it was working it was not satisfactory at all.
I do not recommend it.
I don't want to give it any stars but.....

This water pump is essentially a mini fountain, with the advantage compared to cheaper fountains being the fact that it has a larger surface area that receives sunlight, therefore it has slightly more power (although not significantly different from cheaper ones).

Personally, I have been using it for a month in a small pond of 300-400 liters of water.

One advantage is that you can place the unit further away (up to 5 meters) in a place with more sunlight, so it can work more hours per day.

A disadvantage is that it doesn't work when there is no sunlight. Because it is referred to (incorrectly in my opinion) as a water pump, it should have a battery that charges during the day and works in the dark, similar to solar-powered lights.

I bought a similar philosophy fountain last year, which was cheap, costing 15 euros. This year it doesn't work. The power difference between last year's and this year's is small.

My estimation is that it is useful for small ponds, but also quite expensive at the same time (50 euros).