Editorial Review
Keep your sports training focused with the stylish Timex T5E231 Ironman Triathlon multi-function, performance sport digital watch, which features a dark gray resin top ring sitting upon a metallic silver case and top pusher for easy access to split and lap times. Sport timing features include a 100-hour chronograph with lap or split option, 100-lap memory recall, 199 lap counter, on-the-fly recall of lap or split, and interval timers settable up to 24 hours (9 timers with countdown/stop and countdown/repeat). The training log stores workouts by date, with best lap, average lap, and total segment time, and the total run format/synchro timer maintains total activity time (less time paused during workout and overall running time. Other features include two time zones, built-in setting reminders, water resistance to 100 meters, and a black resin strap.
It incorporates the Timex Flix system, which activates the Indiglo night-light with a simple flick of your wrist. To activate FLIX, put the watch into Night-Mode by pressing and holding the Indiglo night-light button 3 seconds until it beeps. With the watch in Night-Mode, a forward "flick" of the wrist with a sharp "stop" will activate the Indiglo night-light for three seconds.
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.
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Customer Reviews
Review of Timex watch 
2008-07-19
Good easy to use features.Seems to be more intuitive friendly than past watches.Buttons seem easier to push.
I wish it was somewaht smaller as it seems to overpower my wrist.The plus side is that the display is easily visible
Another Great Timex Product 
2008-07-17
My husband is VERY picky about the watches he uses to time his swim laps. The lap button has to be just-so, the right size in the right location. This watch fits the bill perfectly, and he can time 100 laps, splits for interval training, and everything else he wants to keep statistics on. Looks good, too!
Nice big Display 2008-06-30
I've owned Dozens of Digital watches over the years. This is one of the best. Pros: LARGE DISPLAY, easy to navigate, dual clocks, multiple alarms, ability to adjust settings with + or -, not just ahead.
Cons: hard to take band off, Timex started to use a tab on the end of the strap, so that the band doesn't slide around, makes it too hard to remove watch, also, the INDIGLO light up the numbers, not the whole display, I suspect to save battery power, it is hard to see in muted light.
The new FLIX feature is nice. When turned on, you just need to give a "flick of the wrst" and the indiglo lights up for 5 seconds. Handy when you can't use both hands.
With all the ALARMS that you can set (up to 5) I wish they would go up to 7, that way you can do one per day of the week.
Ironman Running Watch 2008-06-21
This watch meets my running needs perfectly. The multiple interval timers (I use 2, but there are 9) is exactly what I needed. The chronograph mode makes it trivial to simultaneously see the "split" time and the total time.
Definitely recommend.
adequate, odd functional errors 
2008-06-14
Odd gas bubble sometimes shows up at bottom of display. Features are not completely intuitive, but if you need a count-down timer this watch is nice.
Great for all uses 2008-06-08
Keep your sports training focused with the stylish Timex T5E231 Ironman Triathlon multi-function, performance sport digital watch, which features a dark gray resin top ring sitting upon a metallic silver case and top pusher for easy access to split and lap times. Sport timing features include a 100-hour chronograph with lap or split option, 100-lap memory recall, 199 lap counter, on-the-fly recall of lap or split, and interval timers settable up to 24 hours (9 timers with countdown/stop and countdown/repeat). The training log stores workouts by date, with best lap, average lap, and total segment time, and the total run format/synchro timer maintains total activity time (less time paused during workout and overall running time. Other features include two time zones, built-in setting reminders, water resistance to 100 meters, and a black resin strap.
It incorporates the Timex Flix system, which activates the Indiglo night-light with a simple flick of your wrist. To activate FLIX, put the watch into Night-Mode by pressing and holding the Indiglo night-light button 3 seconds until it beeps. With the watch in Night-Mode, a forward "flick" of the wrist with a sharp "stop" will activate the Indiglo night-light for three seconds.
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.
Flix is very difficult to work 2008-06-06
The amount of force required for Flix to function is way too high so Flix is almost useless to me.
Decent workout watch, but chime is very weak, no Tabatas 2008-05-29
This watch replaced a G-shock as my primary workout and everyday watch. I bought it primarily because I am now doing mostly interval workouts, both for running and in the gym, and wanted an audible indicator so I did not have to keep checking my watch.
PROS:
Decent-looking watch, except for the BOLD white-wall lettering on the band, but a Sharpie takes care of that. Numbers easy to see, controls easy to figure out and manipulate. Rubber strap does not absorb sweat or grab wrist hairs. FLIX feature very handy for night work, not overly bright. Light-weight, lower profile than typical G-shock.
CONS:
1. Weak chime - hard to hear over any noise.
The roads I'm running are reasonably quiet, aside from the occasional UH-60 helo flying over or diesel honey-truck going by, so most of the time I can hear the multi-tone chime signaling end-of-interval, but have missed it when a vehicle is passing by. Fugedaboudit if you're in a typical loud gym with music, cardio machines, TVs, and the grunters and plate-slammers, or your own mp3 player, Creative Zen Stone Plus 2 GB MP3 Player (Black).
2. Will NOT work for Tabata Intervals of 20 seconds work, 10 seconds rest, repeat 8 times. I set INT 1 at 20 seconds, INT 2 at 10 seconds (REPEAT at end), then DONE. At end of first 20 sec interval the watch gives only the faintest "pip" before going into interval 2 - practically impossible to hear if you're involved in any intense cardio exercise. After a little experimenting I discovered that if the second interval is set below 15 seconds you'll only get that 'pip,' otherwise you get a more noticeable "ditty-dee, ditty-dee" signaling the start of interval 2. DOES give a very noticeable 10-second chime at end of interval 2 as it recycles to 1 and repeats.
3. Menu lag time. There's an annoying 3-4 second lag when switching to the CHRONO mode before you can press START. Does not seem to affect other modes. I'm impatient, and switching between CHRONO and INTERVAL modes while working out or running should not cost me time.
I might buy this again for a running watch, but for my primary workouts (RossTraining.com) I now use the awesome $20 Gymboss Interval Timer clipped to the band of my Ironman watch, set to VIBRATE 1-second between intervals. GYMBOSS does Tabatas perfectly! Train Hard!
Flix Watch 2008-05-28
A great watch which affords checking the progress of my runs in darkness using only one hand - no other watch (to my knowledge) delivers this feature.
I also use it to monitor my swimming performance in open (salt water). My fourth Flix since 2001.
Eric E. Clarke
To Timex: Can you put the Flix feature in your GPS watches as well?
Mine was garbage. 
2008-05-27
I wore this watch for around two years. The buttons will eventually stick and one even stuck permanently. At that point pushing any one of the buttons would cause the watch to reset. This was the third Ironman I've owned since 1996 and two of the three were complete junk. Timex's newest Ironman looks like a cool watch, but I want something more durable.
