Pick a brand that names full-grain leather, not just leather. Read the warranty...

https://future-wiki.win/index.php/Best_Leather_Gift_for_a_Guy_Who_Wears_a_Watch_Every_Day

Pick a brand that names full-grain leather, not just leather. Read the warranty to see what it covers, for how long, and how to make a claim. Check how initials are applied - stamped, embossed, or engraved - and where they go