The battery has an inspection window, which also is still very well visible in the installed state. It came in from another manufacturer also seen in a different way.
My car (V6 engine with 2.7L displacement) starts again quickly. As others have written, you will be able to assess the real life only in the winter. It was replaced with an original 68Ah battery that had to fight for my audio system somewhat.
However, until now it is fully recommended, especially if you see the shipping and the delivery time associated.