Water Resistant to 100 Meters
Interval Training Timer
INDIGLO® Light-Up Watch Dial
Face too big - but
"Face too big - but you didn’t have a smaller faced watch with the same functiona"
Try It On
Case Diameter 44mm
Case Diameter 44mm
Try It On
Case Diameter 44mm
Wrist Size (in)
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Wrist Size (in)
How to measure your wrist size
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Delivery, Returns & Warranty
Delivery
Free Standard Shipping on most orders. Fan Shop orders do not qualify for free shipping. Buy two straps get free Standard Shipping.
Returns
Get your refund faster with easy online returns! Mail your items back with our return label within 30 days.
Warranty
Your Timex® watch includes a limited manufacturer’s warranty covering defects in materials and workmanship for a period of one year from the original purchase date.
Add optional protection with Extend in your cart or checkout for coverage against accidental damage and mechanical failure beyond the standard warranty.
IRONMAN Classic 100 Full-Size Resin Strap Watch
44mm
-
Water Resistant to 100 Meters
-
Interval Training Timer
-
INDIGLO® Light-Up Watch Dial
Regular price
$111.00
Sale price
$111.00
Regular price
$111.00
Unit price
per
Reach your goals
The undisputed favorite in sport watches crosses nearly every finish line in the world. Built to be lightweight and sealed for water resistance, the iconic five-button design gives you direct access to the features you need on a large, glanceable display.Specifications
Product ID
T5E231
Quartz Digital Movement
A quartz digital movement uses a battery-powered quartz crystal to keep precise time, displaying it on an easy-to-read digital screen.
Quartz Digital
Tell Time at a Glance
A digital quartz movement uses a battery and a vibrating crystal to keep precise time, displaying it on an easy-to-read digital screen. It’s reliable, accurate, and built for everyday convenience.
Case & Dial
- Case Diameter 44 mm
- Watch Weight 46.81 g
- Case Material Resin
- Case Color Silver-Tone
- Case Finish Matte / Shiney
- Dial Color Digital
- Dial Markings Digital
- Battery Type CR2025
Durable Band
- Band / Lug Width 18 mm
- Band Material Resin
- Band Color Black
- Band Buckle Buckle
Acrylic Crystal
A lightweight plastic polymer with excellent impact resistance and a warm vintage appearance that can be easily polished to remove scuffs.
Acrylic Crystal
Highly impact-resistant
Acrylic lens are a specialised form of plastic akin to Plexiglass and were commonly used in early to mid-20th century watches. It is a softer material that can be more prone to scratches but conversely is very shatter-resistant. Given its softness any scratches though can be buffed out. Acrylic lens are synonymous with vintage-inspired timepieces and thus can be found on our Marlin and Q Timex collections.
Acrylic Crystal
Highly impact-resistant
Mineral Crystal
Enhanced durability
Sapphire Crystal
Scratch-Resistant
Water Resistant to 100 Meters
This watch is suitable for swimming, snorkelling, poolside diving or surfing. It is not suitable for scuba diving. To maintain water resistance, do not press any buttons while underwater.
100m
Water Resistance
This watch is suitable for swimming, snorkelling, poolside diving or surfing. It is not suitable for scuba diving. To maintain water resistance, do not press any buttons while underwater.
30m
Light rain, sweat & splashes.
50m
Short swims.
100m
Swimming, snorkeling & surfing.
200m
Recreational scuba-diving.
300m
Deep-sea exploration.
Interval Training Timer
Define your own repetitions for high intensity and rest periods to make complex workouts automatic. Save and repeat your custom interval workouts right on your watch.
INDIGLO® Light-Up Watch Dial
Developed by Timex in the early 90s, our INDIGLO® backlight allows you to tell the time in the dark with the push of a button.
Try It On
Case Diameter 44mm
Case Diameter 44mm
Try It On
Case Diameter 44mm
Wrist Size (in)
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Wrist Size (in)
How to measure your wrist size
Wrap a garment measuring tape snuggly around your wrist just below the wrist bone. Alternatively use a piece of string and then measure the string length with a ruler. The average wrist size for men is 6.5-7.5", and for women is 5.5-6.5".
How to choose the right case size
Case diameter determines the watch size: it’s the width of the watch case, excluding the crown. Small wrists (<6") suit 28–36mm, average (6–7") fit 36–42mm, and larger wrists (7"+) can wear 42mm+. Smaller cases can feel refined or vintage-inspired, while larger ones make a bold, modern statement.
Only Honest Reviews
from Real Customers
Overall rating: 4.7596154 / 5 from 104 reviews.
AI Generated Review Summary
The IRONMAN Classic 100 Full-Size Resin Strap Watch is praised for its large, easy-to-read face and display, intuitive functionality, and useful features. Customers appreciate the multiple time zones, alarms, and stopwatch capabilities. However, opinions on the band vary.
Summary topics
- Face Readability: 5%
- Functionality: 9%
- Useful Features: 7%
- Display Readability: 6%
- Alarm Capabilities: 7%
Review topics: [size, strap, looks, piece, style, band, buttons, watch, light, numbers, alarm, function, features, display, face, model, battery, timepiece, timer, price, indiglo, bracelet, timex, capabilities, beeps, ironman, case, dial, works].
Review highlights
- "Has very useful features (5 weekly/daily alarms, stop watch, etc.." —
- "Great watch, able to see time with bigger numbers and the band is very comfortable." —
- "Perfect size, weight, display, etc." —
Reviews
This watch is the gold
"This watch is the gold standard. You can use as many or as few of the functions as you want. Rugged, appreciate the Indiglo feature, and I like the big face and big numbers. Can't go wrong with this watch. I only wish they would bring back the Flix feature for the Indiglo."
Wore these for years. Comfortable.
"Wore these for years. Comfortable. Good watch to have for every day. Good enough for Chuck Norris!"
Met my expectations and love
"Met my expectations and love the Indiglo."
This is exactly what I
"This is exactly what I was looking for. I got my old watch when I was 15, this is my first adult everyday watch."
I have used a Timex
"I have used a Timex for my workouts for years."
ver good service, the watch
"ver good service, the watch arrived very quickly."
Paul loves his new watch!
"Paul loves his new watch! He has worn Timex Ironman watches for years, and it was time for a new one. I got him the upgraded one and he is absolutely thrilled with the fact that all the buttons work (compared to the old one)! Thank you for making my shopping experience positive and easy!"
I purchased this watch because
"I purchased this watch because the TIMEX representative said it had 5 alarms. I had previously owned a TIMEX watch that had 3 alarms. I have owned TIMEX watches for over 30 years so I have been a very loyal customer. When the watch arrived, I could only see one alarm. I called a representative at TIMEX and they guided me through the process of finding the other alarms. It turned out the watch had only 1 alarm as I suspected and the representative told me that the watch had been programmed incorrectly. I purchased another one yesterday and the representative told me he would contact the warehouse to make sure all 5 alarms are working correctly on my second purchase. I will test the new one when it arrives. I hope TIMEX will rectify this situation. If the second one does not work as advertised, I will be sending both back. In addition, I have purchased 2 other TIMEX watches through your Amazon store that advertised that they had 3 alarms. Sadly neither had 3 alarms. In fact both only had 1."
So far so good.
"So far so good."
Q&A
- i have an old iron man Triathlon Wtch model 590 20 and I need a new watch bland. It is so old the bland just fell apart. the watch its self is still working great. I would like to give to my son. Thanks, I hope you can help me. I have been wearing Timex for over 60 years, I love all of the them Thanks, Bill
- Hi Bill! We love that you adore your watch! Finding a replacement strap shouldn't be a hassle. Check out our selection here: https://timex.com/collections/watch-replacement-straps Remember, you can always reach out to our friendly customer service team for further assistance. We're available by phone (1.888.727.2931), email (timex.com/pages/contact), or live chat (lower right corner of timex.com) Monday - Friday, 9:00 AM - 7:00 PM EST. We're happy to help you find the perfect Timex watch!
- What do the 2 numbers below the lap counter mean?
- Hello William! We’re happy to help explain this feature for you. The two numbers below the lap counter on the IRONMAN Classic 100 usually show your current lap number and the total laps recorded. This helps you track your workout progress more easily during training sessions.
- Can this watch display real-time heart-rate? Several years ago it came with a chest strap to monitor heart-rate.
- Hello Ray! We appreciate your interest in the IRONMAN Classic 100. This model does not support real-time heart-rate monitoring and is not compatible with chest strap sensors. It focuses on timing, lap tracking, and workout performance features rather than health metrics.
- Is it a non-EMF watch?
- Hello Kevin! The IRONMAN Classic 100 Full-Size Resin Strap Watch does not emit electromagnetic frequencies that would categorize it as an EMF device — it’s a standard digital quartz timepiece. It’s powered by a battery and designed for everyday sports use, so it’s completely safe for regular wear, even in environments where EMF exposure is a concern.
- does this watch count steps?
- Hey John! Thanks for reaching out. The IRONMAN Classic 100 Full-Size Resin Strap Watch does not include a step-counting feature—it’s designed primarily for interval timing, lap memory, and stopwatch functions. If you’re looking for fitness tracking like steps, you might want to explore Timex’s smartwatches or fitness-focused models.