Features:

• Sports timing watch with heart rate monitoring; sized for both men and women
• Chest strap heart rate monitor works with watch to provide target zones and time in zone
• Recovery heart rate timer; displays calories burned
• 100-hour chronograph; 30-lap memory; 100-hour, 3-mode countdown timer
• Watch is water resistant to 50 meters (165 feet); up to 2-year battery life

Editor Reviews:

Product Description:
Accept no imitations or limitations. There is only one Timex IRONMAN* Triathlon®. Stylish enough for the weekend warrior, technical enough for the extreme athlete. Don't swim, bike, run, jump, climb, throw, or kick without one?

Amazon.com Product Description:
Combining stylish looks with power sport timing and heart rate monitoring features, this mid-sized Timex Ironman Triathlon watch (model T59751) can be worn by both men and women. It features a chest strap heart rate monitor, easily accessible function buttons, and Timex's comfortable doubleshot polyurethane strap. For integrating heart rate monitoring into your training, this watch enables you to track your avareage heart rate and pre-set target heart rate zones with data for time spent within that zone and alarms. It can also display data for calories burned and offers a recovery timer that measures your heart rate after a timed recovery during or after your workout. Sport timing features include:

• 100-hour chronograph with lap and split, either in large digits
• 30-lap memory with average heart rate per laps
• 100-hour, 3-mode countdown timer
• Alarm with 5-minute backup
• Month/day/date display with 12/24-hour time
• 2-year battery life

The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It uses less battery power than most other watch illumination systems, enabling your watch battery to last longer. The Night Mode feature allows you to illuminate the Indiglo night-light for 3 seconds with any button press, regardless of the mode or function. The watch is water resistant to 50 meters (165 feet)--suitable for swimming but not for diving. All Timex heart rate monitor sensors have batteries that can be replaced by consumers without requiring them to be returned to the manufacturer.

Rating : - Solid HR Monitor
I have been using this HR monitor for about 11 months, and it's been fairly reliable; however, I did need to replace the chest strap device through Timex. The replacement has been working ever since. Of the three HR monitors I've had, this is the most reliable. I run about 30-40 miles a week, and I always wear it. I'm a database nerd, and I've been able to use the data from the watch to compile some useful information on my running progress.

High points:
- Calculates calories
- Easy menus and setup
- Gives me just enough information (one HR monitor I tried with GPS just had too many options).
- Review setting is nice

Low points:
- Occassionally it will "flip out" (instead of it being 144 or 148 it will sometimes go down to 118 or up to 184). This happens only every once in awhile.
- Display is only 2 lines. This is a smaller watch. 3 lines would be better so I'd be able to see my HR, total time, and split time.

I purchased the data recorder, but I don't use it anymore. The software is somewhat useless. It seems more suited to a fitness test that would be useful for a medical assessment.

If this watch had a 3-line display it would be perfect. As for the issues with the strap needing to be replaced, it seems like that's just how these things "work." I had a Nike model (junk) and another more expensive Timex (sent it back) that did not work as well as this model.