Timex Men's Ironman Triathlon Classic 30 Oversized 43mm Watch

Adjustable black 20mm nylon Fast Wrap strap with hook & look closure fits up to 8-inch wrist circumference

About this item

  • Adjustable black 20mm nylon Fast Wrap strap with hook & look closure fits up to 8-inch wrist circumference
  • 100-hour chronograph with 30-lap memory; 24-hour countdown timer
  • 3 daily, weekday or weekend alarms; 24-hour military time mode; 2 time zones; day, date & month calendar
  • Black & blue 43mm resin case with acrylic lens; gray digital display; Indiglo light-up watch dial
Category: FashionWrist WatchesRanked #99 of 455 in Fashion
9.0Our score
Our verdict

Adjustable black 20mm nylon Fast Wrap strap with hook & look closure fits up to 8-inch wrist circumference

Ranked #99 in Fashion · 4 things we like

Quick answer The Timex Men's Ironman Triathlon Classic 30 scores 9.0/10 with us. Amazon owners rate it 4.5 out of 5 across 17,587 reviews, in line with the 4.4 average of the 141 wrist watches we track.

Adjustable black 20mm nylon Fast Wrap strap with hook & look closure fits up to 8-inch wrist circumference 100-hour chronograph with 30-lap memory; 24-hour countdown timer 3 daily, weekday or weekend alarms; 24-hour military time mode; 2 time zones; day, date & month calendar Black & blue 43mm resin case with acrylic lens; gray digital display; Indiglo light-up watch dial Water resistant to 100m (330ft): in general, suitable for swimming and snorkeling, but not diving

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Product information

3 specifications
Product Dimensions‎ 7 x 4 x 4 inches; 1.44 ounces
Department‎ mens
Batteries‎ 1 Lithium Metal batteries required. (included)

Pros & cons

What we like
  • Adjustable black 20mm nylon Fast Wrap strap with hook & look closure fits up to 8-inch wrist circumference
  • 100-hour chronograph with 30-lap memory; 24-hour countdown timer
  • 3 daily, weekday or weekend alarms; 24-hour military time mode; 2 time zones; day, date & month calendar
  • Black & blue 43mm resin case with acrylic lens; gray digital display; Indiglo light-up watch dial
What could be better

    Timex Men's Ironman Triathlon Classic 30: questions & answers

    Is the Timex Men's Ironman Triathlon Classic 30 worth buying?

    Yes, it is one of the stronger picks in its group. We score the Timex Men's Ironman Triathlon Classic 30 9.0 out of 10. Amazon owners rate it 4.5 out of 5 across 17,587 reviews, in line with the 4.4 average of the 141 wrist watches we track.

    What options does the Timex Men's Ironman Triathlon Classic 30 come in?

    Amazon lists 2 options. Color: Black/Blue, Black/Silver-Tone. Pick an option on this page and the button opens exactly that model.

    What are good alternatives to the Timex Men's Ironman Triathlon Classic 30?

    Similar, well-rated wrist watches in our catalog: Timex Men's Ironman Triathlon Endure 30 Shock (8.8/10, 4.4 stars from 5,481 owners); Timex Women's Ironman Triathlon Transit 33mm (8.6/10, 4.3 stars from 6,910 owners); Timex Men's Classic Digital 34mm Watch (9.0/10, 4.5 stars from 7,700 owners).

    Customer reviews

    All reviews on Amazon
    4.517,587 global ratings
    5 star80%
    4 star20%
    3 star0%
    2 star0%
    1 star0%

    Breakdown from the 10 most helpful reviews we imported.

    J
    JBuckley
    Verified purchaseSeptember 15, 2026
    The Perfect Watch

    I love this watch! The band is a little stiff, but I'm guessing it will loosen up over time.I bought the larger version (oversized) back in 2014 and wore it as my daily driver until the bezel finally wore off. I still works great, but looks like hell. When I first tried finding a replacement for my old Ironman I bought the T5E901 and returned it as soon as I opened the box because it looked comically small next to my old watch. Timex is really pushing that particular style right now, but I noticed this specific watch in a YouTube video that piqued my interest. This watch (T5K821) is actually s

    N
    Nate
    Verified purchaseFebruary 10, 2026
    Built like a tank—Outlasted every other watch I’ve owned!

    The Durability: I’ve been using this watch daily for over a year under pretty rough conditions, and it is the only one that has held up. While the body has some honest scuffs from use, the strap shows no signs of cracking or breaking, which is usually where these watches fail for me. It’s a beast for the price.​Functionality:​Tested Waterproofing: I’ve tested the water resistance several times now and haven't had a single issue with fogging or leaks.​Essential Tools: The timer and stopwatch are incredibly useful for daily tasks, and the time itself has stayed 100% accurate without needing adju

    T
    TheBunz
    Verified purchaseSeptember 18, 2026
    USMC Vet with watch tan line

    Love these watches never take them off until the band dry rots 3 years later then throw out and get a new one. Have done everything in them that the military can throw at you and it’ll survive. Deep underwater and intense beatings with a battery life longer than the wrist band will survive so worth it. I keep mine on 24/7/365 and feel naked without it. This one is inverted, numbers blank background black. Hard to see in the sun at times

    G
    Garbo
    Verified purchaseMay 5, 2025
    Great Watch -Some Concerns

    I have purchased Timex Iron Man series, and similar, watches for many years. They are an excellent value, with good functionality overall.However, there has been one overriding negative design feature that should have been dealt with a long time ago. That is the strap quality. The strap appears to be silicone, and over time removing the strap causes it to crack prematurely, and break. The watch still functions wonderfully, but the straps are NOT replaceable. Therefore, you either need to cut of most of the strap and use it as a pocket watch (which I will NOT do), or THROW THE WATCH AWAY.Second

    T
    ThunderDawg
    Verified purchaseSeptember 1, 2026
    Has held up well

    This has taken a lickin and kept on tickin l. Have had mine slightly more than 2 years and haven’t had to changed the battery yet. Regularly have taken showers with it on. The indigo light is a bit on the faint side for me, alarm could be louder. Strictly as a waterproof watch, no complaints.

    L
    L Chance Correll
    Verified purchaseJanuary 21, 2025
    Still the champ.

    I absolutely LOVE my Casio GBA800 that I have bully bars on, so she's quite huge. Analog with Bluetooth, pretty cool. If I ever remember to use such things. I have a phone and laptop on me usually, why do I need to play with my watch? I want to tell time, that's it.Comes along a good sale for an Ironman, and I used to be a complete fanatic for only Ironman for a real person's needs. Why not, I've been fighting the Casio all day with my coat cuff, let's get something a bit slimmer for when it's coat season. See if they're still great. Yup! Sure is.It's been probably 25 years ago last time I wor

    K
    kone
    Verified purchaseMay 23, 2008
    Lightweight, Options, and Ease of Use Make this a Great Watch

    I have purchased many Timex watches over the years and I am entirely satisfied with this watch. I always buy the sports watch, as I swim and do triathlons.Things I like about the watch:*Setting the watch is easy and the instructions are clear (although the printed instructions are very small!)* The watch is not too big. So many watches have too many features and they are large, bulky, and heavy. This watch is sleek, has a low profile, and has a size that is ideal for average needs.* The numbers are big enough to see easily at a glance.* There are enough useful options, and this watch is not ov

    E
    Emily G
    Verified purchaseAugust 25, 2026
    Good but confusing at a glance

    good watch, bit confusing at first

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.