I had a Super Ocean Chrono as my daily watch for almost a decade. Agree on them being pretty much indestructible. It got bashed around, scuffed, and dropped more often than I care to think about. But, the only time it stopped working was when I got sand in the mechanism (not entirely sure how), and every time it came back from servicing it was polished up like new. My biggest complaint was that the thread holding down the crown kept stripping, then again, they kept replacing it for me. I only got rid of it after I got my Seamaster and realised I just wasn't wearing it any more.