I own an original Casio AMW-320C that I purchased in 1992. The watch keeps perfect time, has no scratches on the crystal, and still looks pretty good after all of these years. The black resin band, however, has been changed about 5 times, and looks like junk -- just like when I bought the watch. Plus, they are uncomfortable to wear in the summer, as they cause you to sweat. They're good for water use, but that's it, as far as I'm concerned. When I was about to replace the battery, I looked at the band and wondered if I could get a decent replacement. I just put this on, using a watch pin tool that I bought a few months ago, and the watch looks 100% better -- in fact, it looks like a new watch. The band is stainless and has a safety on the clasp. Worth the money.