


โฑ๏ธ Own your time, day or night, rain or shine!
The Timex Men's Ironman Triathlon Classic 100 is a rugged, feature-packed digital sport watch designed for serious athletes and busy professionals alike. With a 44mm resin case, 100-hour chronograph, 100-lap memory, and water resistance up to 100 meters, it supports intense training and active lifestyles. Its innovative Indiglo night-light with FLIX technology ensures visibility in any light, while dual time zones and multiple alarms keep you on schedule globally. Lightweight and durable, this watch fits wrists up to 8 inches with an adjustable resin strap, making it the ultimate companion for performance and style.

| Asin | B01F8V3T1C |
| Batteries | 1 Lithium Metal batteries required. (included) |
| Best Sellers Rank | #341 in Men's Wrist Watches |
| Date First Available | July 15, 2016 |
| Department | mens |
| Item Model Number | TW5M03400 |
| Manufacturer | Timex |
| Package Dimensions | 4.25 x 3.11 x 2.76 inches; 1.6 ounces |
User
Great sports/fitness watch
I will start my review with an admission:I hate digital watches.I think 7-segment numbers look ugly, and I prefer the ability to see the 'distance' between times visually that you get with an analog face.But I needed the timer and lap counter for my job, and I have always wanted to do interval training to improve my speed and endurance while cycling. This watch had everything I needed and more. I was aware that Timex was a respected brand, and the T5E231 was the only watch in my price range with the ability to count 199 laps.I have to say, though, that after a week of use, I actually love this watch. Not only does it meet my needs functionally, but it actually brings me pleasure to wear it and operate it. The yellow trim around the inside of the bezel clearly identifies it as a sport watch, yet it seems to fit in well in formal settings. The interface is incredibly user-friendly and satisfying to operate. I never thought I would refer to a watch's "interface", but this watch actually has one. Pressing most of the buttons results in actual text being displayed on the screen telling you what the button did, or what will happen if you hold that button down just a little longer. In most modes there are even little labels that appear on the screen by the buttons telling you what they do in that mode. Figuring out how to use almost all of the functions only required five minutes of random experimentation. The only thing I had to consult the manual about was how to switch the chronograph into lap counter mode. I just wish there instructions explaining how to fold the manual back into a size that fits inside the watch stand.There are so many little touches that make it clear the designers at Timex really take pride in their work. Here are my favorites:-When turning night mode on, the Indiglo lingers for another few seconds after releasing the button. But when turning it off, the light extinguishes immediately! It should, since if you are turning night mode off, it's probably daytime and you don't need the Indiglo anymore.-Being able to scroll numbers backwards and forwards while setting times. On other watches it is so frustrating to 'miss' the number you want and have to press the button 60 more times.-Little icons appear on the home screen letting you know if the timer, chronograph, or alarm is running in the background. Most watches only have an icon for the alarm.-The speaker plays a different sound for the alarm and the timer, so you know which one is going off without looking at the screen. Also the Indiglo light flashes.-The Indiglo system is clearly a masterwork of engineering. It looks evenly lit and is very easy to read, yet it doesn't illuminate anything other than the display (unlike the backlight on a phone, for example). This must save a lot of battery power, since lighting up other objects around the watch is a waste of electricity. Besides, you have your phone for that!-In timer mode, you can see what time the timer was originally set for on another line below the countdown.-The AM and PM appear in the same place on the display; there is just one little segment that lights up to turn the P into an A.-Many of the buttons that perform an irreversible or potentially unwanted function (such as resetting the chrono or clearing workout data) require being held down for several seconds so you don't trigger them accidentally.-The watch tells you how much memory is free for storing workouts.There is only one problematic thing about this watch (and it may actually be a problematic thing about myself). In order to activate the FLIX system I am required to wrench my arm so hard I nearly dislocate it. It is painful, and takes way more effort than just pressing the Indiglo button. This doesn't bother me, because I didn't buy this watch with the intention to ever use FLIX, but it is somewhat frustrating that it is so hard to use. However, it is possible that my technique is flawed, and there is an easier movement that will activate it. But I don't really want to experiment; I like my arm in its current uninjured state.In all, I am very satisfied with my purchase. I love everything it does, and the only 'negative' probably says more about me than it does about the watch. Considering my abhorrence of digital watches, I am surprised that I like this one so much. I don't plan to wear it any other time than while at work or working out, but for those times it is not only tolerable, but actually enjoyable.I highly recommend this watch!
User
Perfect for Training (Swimming) Purposes.... 5 Star for what it does as a training watch!
This is already my 2nd TIMEX which I use for my swimming practices..This one beats the older model (Timex 51931 Ironman Triathlon) with some interesting changes:1) The larger digits on this model makes it easier to read the numbers (as some mentioned to do so when running) even when I am swimming, with a quick flick of the wrist at the turn, it's possible to see the minutes and the seconds.... The older model had smaller number, thus not making it possible to do this.2) The navigation on this model became quite easier. It was already easy on the older model but this one included instructions on screen, such as NEXT, DONE, + or - in order to advance with your practices and training... Plus a chance to change the way you want to see the information of the your laps (Laps in the big digits and splits at the smaller one, or the oposite)A Real nice add on by TIMEX.3) A simple but effective wrist band "clip" (the tiny piece of strap that attachs the "extra" wrist band that is left after you put the clock on)It has a piece of rubber on the inside that locks on at the wrist band and does not make it loose or even letting it go as some other watches do sometimes. This is more effective underwater I think, as it remains the way you set your wrist, as the older model I had did not quite held in place all the time.4) Plenty of memory (100 laps is really a nice number), maybe more then most will need but, as a swimmer I use to count splits over 100m (or yards) with many laps during one training... It is quite usefull. I go easily on 10 to 15 laps of the memory in one training.And with the date feature, that reminds when you did these times, it is quite usefull to keep track on the training with a spreadsheet, for instance... (as I do !)5) A really big START/SPLIT buttom that is great to press when I am swimming laps and have to press myself at each turn at the pool.Just perfect. Never a miss !And the feature which was already at most of the models, of the repeat countdown, and the start of a chrono, or a repeat (what I use the most) in order race agains your average rhitym inside a certain time frame that you can set it up ! And of course the flix technology, which is very good to have it... Just flick your wrist (when you set it to ON) and it will show you at night all info that you need.It is another great watch from TIMEX and it deserves a look, specially for the price. It is worth to pay a bit more if you are like me and uses a lot of the memory for the laps on swimming pool. Maybe for runners it can be quite a lot of memory, but the price difference is worth the change, for some of the options mentioned at this review.This is a really good watch to have..Will you definatelly like as we all are at these reviews.:-) It deserves the 5 stars rating !
User
Great watch ... I've been wearing an ironman 30 or 100 for a long long time
These ironman watches just last. I typically wear mine till the battery dies (3-4 years) and I just buy another. I currently own a classic 30 and a classic 100. Bought the 100 because the numbers were bigger. :)I wear mine all the time ... in the shower, swimming, bicycling, camping, etc. I only take it off when painting or working on the car. I've never had one fail and I've worn them forever. Maybe decades.Pros:1. ultra reliable2. rugged ... yeah it may get paint on it or take a ding but it keeps ticking3. batter life is crazy long ... 3-4 years4. appearance ... I like the simple look5 timers are awesome and simple to use ... I find myself timing stuff almost every day6. you never have to take the watch off before doing something ... swim, run, workout, hike, camp, ....Cons:1. I wish the watch would put the month/day on top of the display face. TOD is centered on display face.2. I wish that the watch used the entire face to display more info.3. I wish that the watch came with altimeter and barometer4. wish it was easier/possible to change the watch band5. wish it was a simple matter to change the battery. kinda hit/miss. I destroy the watch trying to do this.6. wish that the classic 100 skipped the "lap timers left message" when you switched modes to use the stop watch timer
User
This is my third one; I like it but your mileage may vary
I bought my first Ironman 100 (T5E231) in May 2015. Swam in the sea with for two weeks at a time during that summer and the following one. That experience taught me that the "Water-resistant to 100 metres (330 feet)" claim is nonsense. Yes, you can wear this in the shower regularly, as I do, and it will be fine. You can probably swim with it on the surface and, as long as you're not slapping it against the surface when you stroke, it will be OK. Subject it to any amount of water pressure (say, diving down to 10-15 feet below the surface) and it will probably leak and fail, as mine did. It stopped working and when I opened it up the interior was seriously corroded.OK: I bought the second watch in July 2016. Within 20 months the buttons failed and I couldn't operate the stopwatch, timer or the set buttons anymore. A quality control dud.I bought the third watch in May 2018. It has been nearly 4-1/2 years since then (@ Oct 2021) and it's going strong. I replaced the battery after 2-1/2 years.The reason why I like it is because it has exactly the features I want. I use timer/stopwatch functions four times a week to time the intervals between my lifts. I use the five different alarm settings regularly at work for meetings. I use the Indiglo light when I fly long-haul on business so I can tell what time it is when I wake up in a dark airliner cabin in the middle of sleeping. I use the second time zone function when I'm halfway around the world on a business trip.I like this watch and will probably buy it again when this one dies. I can wear it with a T-shirt and also with a suit and it looks good. It's reliable and the various functions meet my needs.I've spent $140 on these three watches over the past 7-1/2 years. I assume I'll get another year out of this one. Had I known about the water resistance problem with the first one, I probably would have gotten at least 3-4 years out of it instead of one.As I noted in the title of my review: your mileage may vary. I like the watch and, as I noted, will probably buy it again as I haven't yet been able to determine whether another one on the market with all these features offers greater value.
User
solid no nonsense watch
This watch has many key features I needed in an everyday watch.- 5 separate alarms which you can set to a single day of week, weekend, weekday, or all week. useful for let's say trash day reminders or school day pickup reminders. The flexibility of the alarms is really key.- 9 interval countdown timers (repeats when done)- 1 countdown timer- stopwatch100 lap (more than enough)- indigo light, excellent nighttime illumination- excellent water resistance and durability. i've had mine for nearly 2 years and it still looks sharp. some of the lettering on the front has rubbed off, but most still visible, colors hold well. and i've put mine thru all sorts of abuse over the years.- large screen and digits for easy viewing at work. i have to record times at work so this was key. date and day of week is easily visible as well.- good battery life. if you don't use light a lot but use alarms regularly can last easily between 1-2 years- excellent price for about 30$CONS:- no vibration, but i don't really need this- dual time zone... actually not ideal because you switch by pushing & holding the start/split button below the face. i accidentally seem to push and hold this button a lot thus it switches my timezone. i've gotten around this by just setting both times to be identical but a bit of a pain- resin band is durable but as always the little moving strap part to tuck away extra band breaks after a while. I discovered a neat trick to use my daughter's small hairband tie folded over twice to secure the extra band now. durable and doesn't look bad (if you pick the right color).- pain in the butt to change the battery (uses CR 2025 by the way). you have to remove both resin band parts first as it slightly overlaps the back case. then there are 4 tiny screws. once the bands are taken off it's pretty straight forward. make sure to align the thin rubber seal before you put the cover on. mine leaked water in after a change until I realized the seal was not sitting properly.Overall, I've been thru smartwatches, fancy watches, solar watches, ... mainly many casio and timex watches. this is by far one of the most practical and best watches I have. I'll be curious to see what google/apple create in the smartwatch category of the years.
User
Superb Value
As far as watches go, it's hard to beat this watch for the money. I'm a very active individual, and have considered going to the next level with my watch (i.e. heart rate, altimeter, thermometer) but have been reluctant to pull the trigger on a $300+ watch. So I stick with this timeless (no pun intended) classic. At the end of the day, what makes the watch so good, is that it just works! Anyone who is remotely familiar with a watch knows that $43 is an excellent price for something that you'll have 5 years (at least). And for that money the watch does exactly what you want it to. The watch has a timer, chronograph, dual time zones, and excellent alarms (you can set 5 different alarms). It is my go-to companion at the gym or outdoors. I had a FLIX about 4 years ago that I lost, and replaced with this model. This model's Indiglo/Night Light/Whatever-you-call-it is phenomenal. My old FLIX was not easy to see with the indiglo at night, but this watch has fantastic contrast when the indiglo is on.And the indiglo is easy to use without actually pressing the button every time. By pressing and holding the indiglo button for three seconds the watch goes in to night mode. In night mode any button press, or a flick of the wrist turns on the indiglo for three full seconds. It gives you an opportunity to check the time, your pace while running, whatever you may need. It may seem gimicky, but the FLIX feature is actually very nice. Imagine walking down the sidewalk, holding hands with your child or significant other, and you want to check the time. Just flick your wrist and look at your watch - no need to let go of their hand and press and hold a button. I know that seems minor, but it will amaze you how much you'll love the FLIX feature.To comment on the alarms. You can have up to five programmed in the watch, and they are easily activated or deactivated with the push of a button. The alarm itself is great, because it's annoying as heck. It's more than just a beep-beep, it's this bizarre, loud almost music-like tone that is certain to wake you.In a nutshell, you can't go wrong with this item. Would make a great Birthday or Christmas/Holiday gift for anyone high school and up.BUY!
User
Great sports watch.
I have to admit to being a bit of a watch fiend, having one for almost everything I do, but this is one of the most useful, yet cheaper priced items I've come to enjoy. When I work out I like as much information as I can get, so for running and biking I have a watch for that, but for swimming I needed a watch to help me count my laps and log my times. The Timex Ironman 100-lap watch does this quite well. I first got a Timex 50-Lap watch that I was able to find locally, but 50 laps is very limiting so when I found this watch for less money and a bigger face that had the lap/split time and lap number on the screen at all times I knew I had a great product. When you're finished with your laps just save your workout. The watch will then calculate some information like average lap time and best lap. I haven't completely messed with their data, but I think they average your times by throwing out the lap times that are the outliers, which is good for the accidental laps where you hit the wrong button, but it's not as great when you did a few sprint laps and they don't show up as your best time. If your best time isn't on there you can still recall it by going through each lap individually, but I think my sprint laps sometimes aren't listed as my best laps. I haven't messed with this feature much because it isn't important to me, and removing the outliers is good for looking at your actual pace. I have been able to push myself a bit more in the pool by having actual numbers to compare, which is very helpful. The other features on this watch I haven't used much, but for someone who can't afford a GPS watch and can use maps or a track this watch would be great for running or anything with laps or intervals.It has up to 9 interval timers and once finished it can either stop or repeat the sequence. It can do what's called chrono at the end, where it just switches to the chronograph feature after your timer or interval timers are finished. Overall this is a great watch and for most people who enjoy doing anything with laps look no further.
User
Will not buy again
Since Dec. 2018 I have purchased 3 of these watches from Amazon. All three have leaked and become inoperable during very limited exposure to water (tub or pool surface < 2 feet). The first lasted ~10 months, the second went ~5 years and this last one, purchased in July 2025 lasted 12 months and 12 days. I did reach out to Timex support this last time to see if I could get any relief for a replacement but was informed "we are not able to verify that Amazon order in our system from here, so we cannot confirm a courtesy replacement or discount". For a watch that is supposedly good for 100m depth, it more often than not misses the mark.
User
Bom produto
Exelente
User
Robust and reliable
Great watch: easy to see the numbers on the display. Simple set-up and robust. I have had this model for the last 18 years and will continue. The only issue can be that afterbattery exchange it may lose waterproof, to avoid that ask only the proffs to exchange the battery!
User
Timex perfetto per me
Ottimo orologio. Io lo uso per gli allenamenti in piscina
User
montre timex
trรจs bien .parfait .
User
Rugged and bold
This is a legendary time piece by Timex and a daily driver. Very large display read out, 2 time zones, indiglo function etc., make it brilliant. This watch does not have FLIX as advertised as this feature has been removed by timex a long while back, but that's not big deal for this price point
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