Here are the guidelines to help you know which types of exposure your Timex ® watch can tolerate: 30 meters: Watch can have an occasional splash of water. 50 meters: Watch can have repeated exposure to moisture and can be used occasionally for swimming or similar activities.

To locate your style number, turn over your watch and look for the alphanumeric codeengraved on the case back (example:TW2R47900). You can also identify your style number by searching your watch ontimex.com; simply click on your watch's product page and look for the alpha numeric code listed under "Specs."

The basic functions and design were the same as its Triathlon cousin, except that the Ironman was water resistant to 100 meters instead of 50, given an updated look with a black, orange and grey color scheme on the watch face, and the 19mm ribbed wrist strap was adorned with the Ironman name and 3 stylized "M" logos.

The last two numbers correspond to the year the watch was produced. The two (occasionally 3) numbers before that are the movement number, the remaining numbers are the catalog number. For example, 2495210592 would indicate catalog number 24952, movement 105, year 1992.