Search  for anything...
Timex

Timex Men's Ironman Triathlon Classic 100 44mm Watch

  • Based on 0 reviews
Condition: New
Checking for the best price...
$54.22 Why this price?

Buy Now, Pay Later

As low as $9.04 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 6 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Mar 4
Order within 12 hours and 11 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Color: Black/Green


Description

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. The Timex FLIX technology activates the INDIGLO night-light on the watch without the need to press a button. A simple forward flick of your wrist with a sharp stop will illuminate the night-light for a full 5 seconds. To use FLIX, you must first activate Night-Mode by pressing and holding the INDIGLO night-light button for three seconds until it beeps. Once Night-Mode is active you may proceed to use the FLIX system as you desire. You will need to give the watch a firm shake to activate FLIX technology. This is necessary to ensure that the INDIGLO night-light won't go off at the slightest vibration or change in direction. 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.

Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 4.25 x 3.11 x 2.76 inches; 1.6 ounces


Item model number ‏ : ‎ TW5M03400


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 Lithium Metal batteries required. (included)


Date First Available ‏ : ‎ July 15, 2016


Manufacturer ‏ : ‎ Timex


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #76,505 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #229 in Men's Wrist Watches


Brand Name: Timex


Age Range Description: Adult


Model Name: Ironman Classic 100 Full-Size


Model Number: TW5M03400


Global Trade Identification Number: 95


Manufacturer: Timex


UPC: 753048655595


Item Type Name: Sport Watch


Item Weight: 1.6 ounces


Display: Digital


Watch Movement Type: Quartz


Power Source: Battery Powered


Closure Type: Buckle


Strap Type: Adjustable, Two Piece Strap


Water Resistance Depth: 100 Meters


Sport Type: Running


Clasp Type: Buckle


Water Resistance Level: Water Resistant


Embellishment Feature: Crystal


Band Material Type: Resin


Case Material Type: Resin


Crystal: Acrylic


Style Name: Chronograph


Shape: Round


Band Color: Black


Dial Color: Gray


Face Style: Crosshair


Case Diameter: 44 Millimeters


Band Width: 18 Millimeters


Case Thickness: 12 Millimeters


Band Length: 8 Inches


Warranty Type: Manufacturer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Mar 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Perfect for Training (Swimming) Purposes.... 5 Star for what it does as a training watch!
Color: Black/Yellow
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 ! ... show more
Reviewed in the United States on January 10, 2009 by Bruno Freitas
    • Durable.
Color: Black/Yellow
My husband loves these watches. They last forever. They are durable and waterproof. No need to take it off. Quality and timeless.
Reviewed in the United States on January 17, 2026 by Jacob Omand
    • Great watch
Color: Black/Green
What I really like is the large numbers I can read without using my glasses
Reviewed in the United States on January 13, 2026 by Steven Slater
    • Accurate Durable Watch, Reliable to a Point
Color: Black/Yellow
I ordered this watch (Timex Full-Size Ironman Classic 100 Watch #T5E231, Yellow, $48) from Amazon on 05Jan2019 and received it on 07Jan2019. It has proven to be an accurate durable water resistant watch - I have showered, and gone swimming with it on for hundreds of hours, but never deeper than about eight to ten feet of water when swimming, and I have worn it all day every day. This watch is the latest in a long line of Timex Ironman watches I have owned, dating back to around 1990. I really like this watch in particular due too its large digital time readout display - much easier on my aging eyes. I have found it keeps accurate time, off about +/- 1 minute per year. The original resin strap of this watch has help up very well over time. In the past, I had fairly quickly replaced the original plastic-like straps on most of my previous Ironman watches as they looked and felt very cheap and weren't durable. Reliable to a point: while all of my other Ironman watches lasted anywhere from 3 to 5 years on their original batteries, I was always reluctant to replace their batteries as whenever I did the watches were no longer water resistant. But at anywhere from $25 to $40 dollars per watch, I didn't mind simply buying a new replacement Ironman watch. This watch, at $48, is no exception to the loss of water resistancy upon battery replacement issue. However, its original battery life was significantly shorter. I noticed the Indiglo night-light function stopped working at 2 years (Jan2021 - 1st indication that the original battery days were numbered), and my original battery completely died on April 19, 2021. I ordered yet another new watch (Timex Full-Size Ironman Classic 100 Watch #TW5M03400, Green, $54) from Amazon on 20Apr2021, and just received delivery of it today (21Apr2021). We'll see how this one fares over time. ... show more
Reviewed in the United States on April 21, 2021 by Gurgs

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...