I have one and love it. The weakest point is the band depending on which one you get, but there are plenty of band options.
Mine originally came with the silicone band that was awesome and really comfortable. I broke two of them so I went to MBT and got a Waterborne band and no problems with breakage since then.
The Waterborne band is nylon with two points that hold the watch in case one pin breaks you never lose the watch.
The one downside is the Waterborne band absorbs sweat and starts to stink but regularly washing it solves that problem.
Bere' has the Original bands and they are fairly cheap so I might go back to get another one someday.
I'm tough on watches and the Luminox has taken the beating and survived every time. I used to buy the cheap Timex or Casio ones for work(fire dept) but the Luminox with the right band has outlasted them all. It is really nice not to have to push a button or hold a flashlight to the watch to see what time it is.