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
• Four linked interval timers, each with its own target zone; recovery timer
• 100-hour chronograph; 100-lap memory; daily, weekday, weekend alarms
• 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:
Stylish enough for the weekend warrior yet technical enough for serious athletes, the Timex Ironman Triathlon heart rate monitor (model T5F001) can be worn by both men and women. It features a chest strap heart rate monitor, large 3-line display for easy viewing of your workout data, and a full range of sport timing features. This watch features a silver face, durable black resin strap, and large buttons for easy access to timing functions.

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 also offers up to four linked interval timers, each with its own target zone, and a recovery timer that measures your heart rate after a timed recovery during or after your workout. Other features include:

• 5 interval timer workouts with warm-up and cool-down
• 100-hour chronograph with lap and split, either in large digits
• 100-lap memory with average heart rate per laps
• 100-hour, 3-mode countdown timer
• 5 alarms with daily/weekday/weekend options
• 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 : - Timex Ironman T5F001 Unisex 100-Lap Target Trainer Heart Rate Monitor Watch
This watch is useful and convenient in most functions.
However, it does not calculate calorie!!!
Half of the people who buy this type of watch are for diet purpose which requires calorie calculation by training.
And I thought it is standard function for these watches, or I just do not know how to check it?
Anyway, if it is only training purpose, this is very inexpensive, good watch.