Obviously divers, swimmers or those who work in moist weather conditions will want to review the water resistance level in the watch options they are considering. If you are a diver, keep in mind that most sports watches are water resistant to some degree, but you shouldn’t assume that a 50 meter depth watch will be okay at 49 meters.
Almost all sports watches are made of either stainless steel or titanium. Hardened titanium is beautiful and durable as is stainless steel and much less expensive than watches made of precious metals such as gold or platinum. Gold is easily scratched so would be less desirable for a sports watch. Stainless steel is the preferred choice for most sports watches.