When I was a young teenager I bought one of my first watches. It was a Timex on a leather strap. It wasn't really sport watch but I used it all during that summer for outdoor activities. It was almost a dress watch like the Easy Reader, with the same kind of black leather strap. I didn't really know about sport watches then. I didn't take it into the water but I would ride my bicycle and things like that. I wouldn't think of using the same kind of watch for that today unless I put it on a nylon strap first. Anyway, I wanted to keep the watch clean so first I treated it almost every day with mink oil. Then I would leave it in a glass of water hopefully to "clean" it. It worked fine. I did this near the end of the summer for a few weeks. The strap seemed to keep up fine. I was impressed.
Then the school year started and I had put that watch down on a desk. I can't remember why but I might have started wearing a digital. Anyway, a few weeks later I decided to wear the Timex. When I picked it up the leather had been completely rotted out. It was almost like I picked up the watch and the band remained on a desk as a pile of black dust (in the shape of a band).
QUESTION: How do they make water resistant leather now? Is it a different type of leather? They are my favorite kind of band. The expedition band sold by Timex is obviously the main kind. But I also have a black one that seems more like the softer leather of a regular dressier watch band. I don't understand how there can be such a difference. I wear the black one in the shower and it shows no signs of wear. I can't find any information about WR leather, but I've heard that some sneaker use them and can even be put into a washing machine.