How many years has Longines been worn by famous craftsmen?

If it is well maintained, 3 years; If not, two years. Especially the crocodile belt, it is best not to get wet, and once it is wet, it should be wiped in time. In addition, in winter, we should regularly put some lotion on the smooth surface of the strap, just a little. Mine took a little over three years. I wonder if it will help you.