Timex IRONMAN® 100-Lap

Strong design and high-level functionality create a powerful sports watch with a large display.
  • Item T5E2319J ships in 1 to 2 days. 24 in stock.
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  • INDIGLO® Night-Light with Night-Mode
  • Dated Training Log with Best Lap
  • Average Lap and Total Time
  • 100-Hour Chronograph with Lap and Split Times
  • 100-Lap Memory Recall
  • Total Run Timer
  • On-the-Fly Lap or Split Recall
  • 99-Lap Counter
  • 24-Hour Countdown Timer
  • Nine Interval Timers with Stop, Repeat and Chronograph Auto-Start
  • Automatic Interval Repetition Counter
  • Daily, Weekday or Weekend Alarm
  • Two Time Zones
  • On-Screen Prompts Make Setting Easy
  • Forward or Backward Setting
  • 24-Hour Time
  • Month, Day and Date Display
  • Attachment Buckle/Clasp Type: Buckle
  • Attachment Color: Black
  • Attachment Material: Resin
  • Attachment Type: Strap
  • Battery Type: CR2025
  • Case Color: Silver-Tone
  • Case Height: 12 mm
  • Case Lug Width: 18mm
  • Case Material: Resin
  • Case Shape: Round
  • Case Size: Full-Size
  • Case Width: 44 mm
  • Crystal/Lens: Acrylic
  • Dial Markings: Digital
  • Top Ring Color: Black
  • Top Ring Material: Resin
  • Warranty: 1 Year Limited
  • Watch Movement: Digital
  • Water Resist: 100 meters

    Terrible Band!

  • I too own this watch and the band is failing- first the little round loop that catches the tail of the strap, and now the actual band itself. This is too expensive of a watch to not be able to find a replacement band!


    The most expensive part of this watch is failing and I will need to junk the watch because I cannot find a replacement band.

  • Chrhistopher


    Great multi-purpose watch

  • I bought this watch 3 years ago. Just replaced the battery. I bought the all black model with the red Indigo Light switch. I wear it to work, cook, barbecue, swim, run and yes, even to sleep - it helps to know what time baby woke in the middle of the night to drink. I especially like the Flix technology, it's a great technology. I wish the light was brighter and the numerals were fatter.

    .comfortable, Performance, reliable, Rugged, Value, Worn all the time

    indigo light too dim, numerals too slim

    Great value and practical!

  • pcksg


    help with band

  • I love the watch, but the band has broken..can i buy a new band without buying the whole watch??

    .Battery life, easy to read, reliable, Value, Worn all the time

    just the band

    great value..great watch for coaches

  • coach52


    Band Issues

  • I see I am not the first with this issue. I like the watch it works very well but the band is about to break and I am having difficulty finding a replacement band. Why make the watch durable and not provide replacement bands. Once the band breaks it becomes a travel alarm clock

    .comfortable, easy to read, Performance, reliable, Rugged, Worn all the time

    band not very durable and impossible to replace

    Difficulty in finding replacement band. Need to purchase new watch every year as band breaks.

  • coogrunr


    Very Good watch

  • I have had this watch for over a year. I swim with it in my pool and in the ocean. I have never had a problem with it. I have not changed the batteries yet. May be that after replacing the batteries the water-resistant feature may be voided. The band broke recently and I am having a hard time finding the appropriate band. This is a drag because I may have to ditch it.

    .Battery life, comfortable, easy to read, Performance, reliable, Worn all the time

    Quality, Size & weight, band not very durable

  • Lucas62


    One Design Flaw

  • I have been through 4 of these models. I love the watch itself. The functions are sensical and the Flix feature is useful in my occupation. The problem is in one simple design flaw: That cheap little plastic thingy that holds the excess band close to the wrist. On EVERY one that I have used, it breaks in the same place, making the watch very awkward and uncomfortable. Basically, unuseable. It is very difficult to find an aftermarket band that matches. I think I'll just use duct-tape on it this time. It will last longer. Once the battery dies, I will not be looking to purchase another one.

    .easy to read

    Uncomfortable, Quality

    I have always been a Timex fan, but with my recent bad luck with design, I would issue a few words of caution before recommending this brand.

  • Wood2112


    Another Band Failure

  • As I read the posts, I too have had the loop on the band fail...And it is so uncomfortable it renders the watch unuseable. Will call the 800 number next week.

    .Performance, Worn all the time, Battery life, easy to read

    watch band

    very functional in the running environment.

  • JRenninger


    Best Ironman Watch

  • Best watch I have owned. Reliable, comfortable, easy to read. I love the multiple alarm settings and the dual time zones. I have owned this watch for over 4 years and just barely replaced the battery. I expect the watch to serve me for many years to come.

    .Battery life, comfortable, easy to read, Performance, reliable, Rugged, Value

    Great watch for the price

  • RampTe


    Overall Good Watch

  • I have the previous model to this watch for years and just changed the battery but I hardly wear it because I had another watch I used regularly for running. When I found this one the battery was dead. I wish the light button was harder to push because rolling around in my draw I think the button was getting pushed wasting the battery power.

    .comfortable, easy to read, Performance, reliable, Rugged, Value

    Battery life, Size & weight

    I think the light button needs to be changed so it is harder to accidentally push it and this will save the battery power or even the light removed and use some sort of glow in the dark watch face background used.

  • mckohtz


    Replacement watch band

  • I really like my Flix Technology 100 lap IRONMAN but I cannot find a replacement watch band. I do not think I should have to replace the entire watch if just the band is broken. I would appreciate any assistance.

  • ArmyDad


    Timex 100 lap ironman triathlon

  • I agree that something needs to be done about the band. I'm having the same issue of band breakage. I hope that band replacements can be arranged. I love the watch.

  • Edward I, Massachusetts


    Good watch when it works

  • My wife and I picked out this watch for me on my birthday only 4 months ago. When the salesperson took the watch out of the box to set the time, she noticed the original battery (battery #1) was dead. So the store installed a new battery (battery #2) on day 1. Then about 2 months later the battery died again. This time, I bought a new battery (battery #3) for it and installed it myself. Now in December, this battery has died. I bought this watch specifically to help me time and count my laps while swimming. The start/stop is large and easy to press while swimming. I wear this watch everyday and really like it. However, I've also noticed the time display switches from Time 1 to Time 2 (and vice versa) at times when I haven't deliberately held the button that switches it (you have to hold the start/stop button for around 7-8 secs for it to switch time modes). I've always had good success with Timex watches, but after this experience my confidence in their products has been shaken.

    .Rugged, comfortable, Worn all the time, easy to read, Value

    Battery life

  • rjmhotrod


    Great Watch - Terrible Band

  • This is the second Ironman I have gotten. Great watches that meet all my needs. HOWEVEVER - It is also the second time the band has broken and I have to replace the watch. No replacement available, therefore will shop for a new line that I can replace the band and not buy a new watch. It's too bad but seems like part of the marketing strategy. Instead of replacing the band I am required to replace the watch. Won't happen again.

    .comfortable, easy to read, Rugged, Worn all the time

    Performance, bad band

    Cannot replace the band

  • Dave


    great, but

  • i love this watch. I have been rough with it. Plus side is simplicity and reliability. Con: plastic watch face scratches easily. Hard to replace band yourself.

    .Battery life, comfortable, easy to read, Performance, reliable, Rugged, Value, Worn all the time

    plastic watch face

    simple and reliable

  • romanz


    A big step backwards

  • I've been a fan and owner of Timex Ironman watches since they first came out. This is the first model that fails for what I've found dependable and usable about the line for all these years. As far as I can tell this is the only 100 lap Ironman Timex makes any more and is an enormous step backwards from previous Ironman models. 1. The interval timer is all but useless if you do sets. On previous models of the 100 lap Ironman you could have the intervals repeat all the steps/intervals a set number of times (1-9) or repeat continuously in addition to stop and chrono. Now you can only repeat indefinitely - you can not run a set of intervals with 5 steps 3 times and then run the chrono(for example). On older models you could run a series such as 5 minute jog - 1 minute run - 1 minute rest 9 times with a 10 minute run (measured on the chrono) at the end. Now if you want to do a set like that you have to count and track the repeats - defeating the entire purpose of the interval timer. The "9 intervals" now are all part of a single set that either runs once or continuously. 2. No year is input on the date. So you have to manually enter the day of the week and track leap years. If you travel this is a pain if you intend to use the alarm. 3. A more minor annoyance - almost nothing is programmed on the same buttons as previous models. Why? The changes don't make it much easier to use from a UX/UI perspective. The one plus over my previous 100 lap Ironman - the dial is easier to read. Otherwise the watch lacks the very features that I found so desirable and dependable in the previous models I've owned with the exception of the memo mode which I never used. I'm profoundly disappointed.

    .comfortable, easy to read, Worn all the time

    Performance, Quality, reduced feature set

    Previous to this my answer would have been a 10. I've bought Timex forever - had one get hit by a lawnmower and rained on before found. Still worked - "Takes a Licking and Keeps on Ticking" But now - it's about 50/50. I have this watch because my last Ironman started falling apart (literally pieces coming off). Without the durability or the feature set - the driver to stay brand loyal just isn't there.

  • Longtimefan


    Good Watch - Broken Band

  • Watch has functioned very well and I really like the ease of use and the big numbers. But - broken band and I cannot find a replacement.

    .Battery life, comfortable, easy to read, Performance, reliable, Value, Worn all the time

  • rbirley


    Ruined by Water

  • Like so many other reviewers here have noted, this "water resistant to 100 meters" watch is decidedly NOT water resistant at any depth. All it took was a quick dip in the ocean and water seeped under the lens, instantly killing this otherwise hearty timepiece. I've owned several Timex sport-style watches and this is the first to make me doubt Timex's quality. Timex Powers That Be: A "water resistant watch" that has been used as intended should not fail to function in water, regardless of how long it's been owned. My watch died a year beyond the standard one-year warranty date. Will Timex stand by their product and offer to repair or replace an obviously defective model?

    Quality, not water resistant as advertised

    As a loyal Timex customer, this latest quality control issue (and the echoes of many other reviewers on this site) make me doubt Timex's commitment to quality craftsmanship.

  • MissingMyWatch


    Great watch

  • The band, it's all in the band. Heavier duty band, if you're like me that's the achilles heel of Timex watches. Been to 10m in diving with it, no problems. I'd buy a couple because it's the best combination of face size, band and it's an Ironman.

    .comfortable, easy to read, Performance, Rugged, Worn all the time

    Pros listed above

  • Dalebank


    Love the watch, not so much the band.

  • I've had three of these watches. Functionally they are awesome. _x000D__x000D__x000D__x000D_I use mine in the pool (even 100 laps isn't enough for me sometimes!) and also often while walking and for intervals on the bike trainer or for run/walk and also sometimes cooking timing. All the functions are awesome. I use all the alarms for different things, as well._x000D__x000D__x000D__x000D_My one complaint with all of these has been the band. I've had one band whose little loop thing broke. Now, my current watchband is breaking right at the point where I put it into the buckle. I've lost a little weight and when I went to move it to the smaller notch, it cracked at the previous one. It's about to break into which is very disappointing. _x000D__x000D__x000D__x000D_Otherwise, the watch has been great. I've replaced the battery once, as I recall, and that's it._x000D__x000D__x000D__x000D_I don't know any other watch maker who makes a 100 lap watch with all these functions, so it's a win in that sense, but the bands need work._x000D__x000D__x000D__x000D_I tried one with the velcro band but for a swimmer that's pretty icky since I do wear my watch all day long. Velcro gets wet from swimming or sweaty from other activities and well, after a while, in addition to being wet/damp, it gets smelly. _x000D__x000D__x000D__x000D_So, the plastic/rubber (or whatever it is) band is the way to go, but it would be nice if they would stop breaking.

  • Amelia


    Good watch

  • A good watch for the money. Love the easy to read dial. The only problem with these watches is the replacement of the bands. My watch band lost the little loop to hold the strap in place. Trying to replace the band is like other reviewers have said "a pain"!!! Timex CUSTOMER SERVICE needs to look at and advise corporate on the feedback from customers on this issue. It comes up often enough on the reviews. An easier strap replacement procedure would have gotten this review an excellent rating.

    .comfortable, Worn all the time, easy to read, reliable

    band replacement


  • Ulyanov


    Excellent Watch

  • I have owned Timex Ironmans for years. I have had this particular watch for about 2. Still haven't changed the battery. I wear this watch for everything - work, backpacking, running, swimming and yes, even ironman races. I love the 100 laps because it saves workouts and race times. I did have one problem though. The 'stop' button would not function. I went for a run and hit the 'stop' button at the finish but it would not stop. Instead, it reset to zero. The running (where the owner claimed he had a PHd in Timex) store was unable to help. After some internet research I found that pressing all five buttons at once causes a master reset. You lose everything - time, alarms, saved laps... But, it works. It restored all functions. This was not in the instruction manual or on the Timex website but it should be. I recommend making this more widely known. It saved me from buying a new watch.

    .Battery life, comfortable, easy to read, Performance, reliable, Rugged, Worn all the time

  • Ratfish


    Excellent choice - reliable/durable

  • I have had this watch for over 4 years, and absolutely nothing has gone wrong with it. I have replaced the battery as needed and it continues to work as it did when purchased new. This watch has gone several times around the world, and is so easy to use (change time zones - used Time 2 for the visiting time zone keeping Time 1 for home). Used every day, and for outdoor activities including snorkeling, swimming, running, hiking, etc and never had any issues. All functions work every time.

    .comfortable, easy to read, reliable, Rugged, Value, Worn all the time

    Battery life

    I never had such a reliable watch. It has lasted over 4 years without any issues whatsoever.

  • JJTX


    Poor Moisture Seal

  • I have never submerged this watch in water, somehow moisture still accumulated inside the lens. I began to first notice it when I ran on extremely hot days, when I sweat the most. After leaving the watch in the cool indoors, moisture accumulates on the lens and lasts a few days. Today, it finally shut down for good.... Bummer I really loved this watch too, but I couldn't buy another...

    .comfortable, easy to read, Performance, stylish

    Battery life, Quality

    I thought they made elite Watches (ironmen wear them) but mine crapped out just from sweating...

  • TarrNation


    Timex Ironman 100 Lap Full Size (T5E231)

  • This is the 3rd watch I've had of this series. I like it because of the large digits and the features. It has worked well for the 4 months I've had it. The other 2 lasted about 2 years each and then the display lost some lines making them useless (no warning). I love the strength and durability of the watch band EXCEPT the loop that holds the end of the band in place - it breaks very easily and both of my other watched needed a second band at $15 each, and then they were ready for another one when the displays failed. The old Timex Ironman watches went through watch bands every few months._x000D__x000D__x000D__x000D_The watch is very easy to use and to see, making it ideal for running when you don't need the advanced functions like GPS or heart rate.

  • CoachDave



  • I have had this watch for 3 years now. It has weathered Triathlons, 10 day Cannoeing trips in Northern Ontario, 10 day backpacking trips in West Virginia, The wonderland trail around Mt. Rainer in Washington, A whole winter season in Ohio running outside through snow, ice and unbeleivably cold runs, Rock climbing all over the place and a dip into Hydrochloric acid(I'm a chemist) which partially melted the wrist band, which was easily replaced. For some reason it keeps on ticking, lol. Most rugged, beat up, put through pretty much everything, watch I've ever owned! Worth every penny!

    .Battery life, comfortable, easy to read, Performance, reliable, Rugged, Value, Worn all the time

    It will survive anything.

  • climbermatt



  • A great everyday watch. I'm a soccer referee and use it constantly for game timing. It works great. The "Flex" option is a waste. It takes quite a snap of my wrist to make it work and the snap option only works for a short time until you have to reset it.

  • Boomer


    Great watch

  • Keeps perfect time. Functions work great too.

  • bbzz


    Great Watch!

  • The Ironman T5E231 (100-lap) is a terrific general purpose watch even if you don't need the chronograph and 100-lap memory. It's light weight, relatively small for this type of watch. It has 5 alarms, in addition to timer and hourly chime functions. These alarms are discreet and, equally importantly, are very simple to set and/or temporarily disable. The screen is exceptionally clean and clear, so it's easy to read for those of us lucky enough to have reached advanced years and need an easy reader. The one design hiccup is the "Flix Technology" nightlight. It takes considerably more than a "flick" of the wrist to activate the light. After a few attempts, really frustration ones when compared to Casio's approach to night lighting, I gave up using it. Notwithstanding, I highly recommend this watch and would certainly buy another one.

  • CityBoy


    Awesome watch, poor quality band

  • I love my Ironman 100-Lap Full watch. Very easy to use, and if it had a decent band I would give it 5 watches, however while in the middle of my tour in Iraq the band snapped right in the middle. I've looked and it's impossible to find a replacement band. It would be nice if you could do it online...

    .Battery life, comfortable, easy to read, Worn all the time

    Quality, Value, weak band

    The watch itself is good. However its not good if you cant wear it.

  • IronmanFan


    Overall good watch

  • I've had two pairs (wiped out and smashed up the first one). Love the interval and memory capability. In the market for a new watch now, however. After replacing the battery myself, moisture started getting in, the 'beep' sound quit (even though I checked the setting), and I started having problems with buttons working.

    .Battery life, comfortable, easy to read, Performance, Worn all the time

    battery replacement

    Affordable and versatile. Have owned several pairs.

  • RunHardTurnLeft


    Band Issues

  • Timex ironman/tri watches have been on my wrist for the last 26 years. The band on this watch has not been up to the Timex quality I have crowed to my friends about. I am considering buying my 3rd watch because the band broke & it's the same part that broke last time. Note to others, save the band pieces of your old one. I had the small strap band from my first that I was able to use.
    You may be asking Why consider another one? Maybe I believe the company who used to say "takes a beating and keeps on ticking" can fix the issue. Or maybe I am just not that bright!

  • Ed H, Washington


    This is a great, practical watch!

  • Easy to read large numerals, easy to read at night, long battery life, really water resistant.

  • CactusWillie


    quit working within two months

  • All the modes quit working for no apparent reason. I can not access any of the features and can only see the time.

  • ClarkC


    Not water resistant

  • I wore this watch daily and it worked great, but noticed small water issue a few times when I showered with watch on and then just outside the 1 year warranty i went swimming with it on (first time) in the ocean and the watch died and actually has sand in it. Pretty disappointed since liked everything about watch, but can't buy another.

    .comfortable, easy to read, Worn all the time

    Performance, Quality, not water resistant

    Would tell everyone watch is great, but don't get it near water. Also life of 1 year is pretty bad and when called customer service indicated nothing I can do since outside of year.

  • UM31


    not water resistant

  • This is a love - hate review. Loved the watch, but it leaked in the swimming pool and was ruined, of course a couple of months outside of the warranty. My previous Timex lasted for years. Bummed.


    leaked in swimming pool. ruined

    Maybe the leak was a fluke. None the less,it is money down the drain.

  • 2amuse


    Terrible Band

  • I have had Ironman 100 lap watches for almost 20 years. I have worn out several, but the last two the little strap on the band breaks. It's the same place, and can't be glued, and Timex doesn't show replacements. The watches work great but I have given up on them because of the $.25 little strap. The watch is unwearable without that little strap.

  • Dennis H, Pennsylvania


    Battery Problem

  • I bought two watches. One was all right, but the other came with no battery at all, and in both the INDIGO Night-light doesn't work.

    .comfortable, easy to read, Value, Worn all the time

    Battery life, Performance

    No reliable service in my country.

  • AraceliF


    Broken within a month

  • I loved the 5 alarms. I bought this watch 4 months ago, and the Indiglo button got stuck, and drained the battery, which I thought was a fluke. I returned the watch, got a new one, and within a month, the same thing happened. Now I have a useless watch, with the battery drained for the second time.

    .5 alarms

    Battery life, Quality, buttons get stuck

    Indiglo function drained the battery by getting stuck in the "on" position on 2 different watches

  • xccoach


    Broke in 2 months

  • Wore it maybe a dozen times. The mode switch no longer works. All I can do now is view the time, which is now an hour behind since the change to daylight savings.

    .easy to read, stylish


    I've never owned a watch that broke in such a short period of time. I usually purchased less expensive models and used them for 2-3 years. This "high-end" model lasted 2-3 months.

  • RAB3


    Another Water Problem

  • I was surprised to read the review from 2amuse posted June 18. I too LOVED this watch, it has tons of features and I wore it everyday and took it everywhere. However, I was swimming at a local pool and water leaked inside. It's stamped with "WR 100 M" on the face of the watch. Was disappointed that the watch failed. The 1 year warranty just passed so I'm unable to get it repaired. I've owned previous Timex Ironman watches and they "took a licking and kept on ticking", except this one.

    .comfortable, easy to read, Performance, Worn all the time


    Disappointed that my watch failed with just a little over a year of use. My previous Timex was BOMBPROOF, but not this one.

  • SwimBikeRun


    "Terrible Band!!!"

  • The band is poorly made and no replacements are available -anywhere!

    I have had 2 FLIX 100 lap watches and the bands wore through on both of them with just every day use (I don't wear it when exercising - I use it for the large easy-to-read numerals).

    The watch works just fine and it's a travesty to throw it away because of the band!

  • Miles C, Washington


    great watch

  • after my old version of this watch went through several new straps and battery replacements, it was finally time for a new one. i debated long over which model wanting one with all the same functionality i'd come to expect including 2 time zones. this current version didn't seem to have that feature but i ordered one any way. to my surprise, it does have 2 time zones although the product detail page doesn't mention it.
    i'm hoping the band survives longer than some of the other posts indicate but it's still a great watch. i love the larger numbers and easy to use controls. glad to have the audio feedback again (which was lost when i had a jeweler replace the old battery and he did it incorrectly). looking forward to many more years with a Timex on my wrist.

  • Jeff F, New York


    Band Issue

  • For those of you with Band Issues, you will most likely need to contact their repair and replacement parts department - start by clicking Support at the top of this page. The band for this watch is not readily available in stores - you have to order it, but it is available. In fact they have parts for all of their watches. I have ordered at least three replacement bands for this watch. If you like the watch and plan on keeping it for a while, order 2 or 3 and minimize shipping costs. If you just want to complain, I can't help you.

  • Jamie S, Texas


    Easy Fix for Strap/Band Loop

  • In case anyone's interested, I fixed my band by using a small, elastic band (flat plastic band, not rubber). I doubled it up and it's perfect for holding the tail of the strap snug. Prior to this, my broken strap annoyed me to no end. Since then, don't notice it at all. On Amazon, search for "Goody Elastic-Band 52 pcs" then select black or clear as you prefer.

    Besides the band loop issue which I didn't realize was so common until reading these reviews, I love this watch. I've had it for about 7 years. I replaced the battery once. Only two minor scratches on the face, which is pretty good for how long I've had it. The features are awesome. I use the multiple alarms all the time, as my memory for appointments isn't the greatest. The FLIX I find hard to use -- doesn't seem to turn on, but I actually just discovered the FLIX feature today, lol. So maybe I just need to get used to using it. Easy enough for me to just push the Indiglo button, though.

    I also like using the countdown and timer features, though I'm not a runner. I use them for meditation and timing different tasks. Anyway, once you get past this simple "band loop" issue as I did, it's smooth sailing and you'll likely never want another watch.

  • Peter M, New Jersey


    Systemic Failure -- NOT Water Resistant

  • I have gone through FOUR replacements for this same Ironman Triathlon watch (I really liked the features and size of this particular watch.) and they all had the same failure: the seal for each watch failed when submerged. Moisture would become visible under the screen and the display would fail. Having gone through FOUR of these watch with the same fault, I have come to the conclusion that this was not an isolated issue.

  • Justin M, Indiana


    Very Good Watch!

  • I am very impressed with this watch. I used to not think that Timex watches were that great until I got the ironman. Its very lightweight, easy to wear, has multiple features, looks good, it was a descent price. I especially love how it has a feature that allows to glow a neon blue in the dark which is beyond cool. I would really recommend this watch to those who likes to keep track of time, record fitness programs, or just wants to look good at the gym. Very impressed!

  • Nick L, Texas