Review on Marathon ADANAC Digital Glow Stopwatch Timer for Teachers Fitness Sport Coaches - Large Display, Blue Backlight, Water, Dust, and Shock Resistant (Black) by Christopher Theriault

I hope this will be a 5 star product but when I received it there was no display (as noted by another reviewer) but the light worked. I went and bought a new CR2032 battery, removed 5 tiny back screws (my jeweler's Phillips screwdriver) and it burst into life! A couple of things - it had to run without maintenance and secondly, if it's "waterproof" by accepted consumer standards I'd be amazed. I would be amazed. Don't buy it with the expectation that it will last for years in a humid environment (e.g. working in the rain, etc.). I didn't see any rubber grommets around the case or buttons to protect the electronics. However, I like the overall size, the display, the light, we'll see how long the SGreg lasts