Features:

• Combines speed-and-distance data with heart rate monitor for serious runners
• Chest strap heart rate monitor provides target zones with alarm and time in zone
• Tracks your speed (real-time, average, and maximum), pace (real-time, average, and best), and overall distance
• 100-hour chronograph; 100-lap memory; 5 alarms
• Watch is water resistant to 50 meters (165 feet); up to 2-year battery life

Editor Reviews:

Product Description:
Indiglo / 100-Lap Memory / 3-Mode Countdown Timer / 5 Alarms / Water Resist 50 Meters / Black/Grey/Silver Housing

Amazon.com Product Description:
Combining speed-and-distance data with heart rate monitoring, the svelte Timex Ironman Triathlon Bodylink System (model T5G311) is a great choice for serious and professional runners, providing accurate speed and distance information as well as heart rate feedback. This mid-sized watch offers a hardened resin case with a silver bezel mounted atop a two-tone gray resin strap with a thin, tapered profile. This Speed and Distance system will track your speed (real-time, average, and maximum), pace (real-time, average, and best), and overall distance. This model also offers target alarms that will notify you when you reach preset upper and lower limits for either speed or distance. This watch also provides:

• 3-line customizable display
• Summary Mode: review speed, distance and heart rate performance data at end of workout
• 100-hour chronograph with either lap/split in large digits,
• 100-lap memory with recall of Bodylink system data
• 2 linked interval timers
• 100-hour, 3-mode countdown timer
• 5 alarms for daily, weekday, weekend or weekly with 5-minute backup
• Up to 2 year battery life
• Included bike mount

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--and the GPS sensor is splash resistant. All Timex heart rate monitor sensors have batteries that can be replaced by consumers without requiring them to be returned to the manufacturer.

Rating : - Too Small
When I opened the package I realized that this is definitely a woman's watch. That's fine, because I got it for my wife, but I was hoping to use it too. Then, within the first 5 minutes of having it out of the package, the battery door on the GPS unit got stuck and I broke it trying to un-stick it. I managed to rig it to work.
When I took it outside to try to acquire the satellites, I found out that the light that shows if you have the satellites is not nearly bright enough to see in the sunlight.
The watch is not medium sized as advertised, but pretty darn small. That's fine, but the main screen for exercising has three lines of info on it. The numbers are so small, you really have to look at it, not just glance at it like I am used to doing with other HRMs.
Other than those issues, it did work well!