Timex Ironman T5E231, 44mm, Grey Dial, Black Resin Strap
Timex Ironman, Grey Dial
The Ironman T5E231 continues a legacy of reliable digital timekeeping. Its lightweight resin case and 100-metre water resistance make it a practical tool for daily training.
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About this item
- The Timex Ironman Classic 100 pairs a silver-tone 44mm resin case with a black 18mm resin strap and a classic buckle closure for a secure fit.
- A chronograph with lap and split recall stores each workout by date and shows best and average lap data, whilst sequential interval timers structure training.
- Five customisable alarms, two time zones, and a calendar keep training days organised, and the five-button design gives easy timer access.
- Water resistant to 100 metres for swimming and snorkelling, with a durable acrylic crystal and an INDIGLO light-up watch dial for easy reading after dark.
- A Timex watch is designed for durability and everyday reliability; every piece reflects our commitment to quality without compromise.
Top Highlights
- Brand
- Timex
- Model Name
- Ironman Classic 100 Full-Size
- Model Number
- T5E231
- Department
- Men
- Item Type
- Timex Men's T5E231 Ironman Classic 100 Black/Yellow Resin Strap Watch
- Manufacturer
- Timex
- First Available
- 1 October 2001
- Release Year
- 2001
Features & Specs
- Display
- Digital
- Movement Type
- Quartz
- Power Source
- Battery powered
- Additional Features
- Alarm, Chronograph, Durable, Lightweight, Timer, Water-resistant
- Complications
- Alarm, Chronograph, Timer
- Strap Type
- Adjustable, Two Piece Strap
- Case Material
- Resin
- Case Size
- 44.0 mm
- Case Thickness
- 12.0 mm
- Lug Width
- 18.0 mm
- Weight
- 45.4 g
- Water Resistance
- 100 m
- Sport Type
- Running
- Strap
- Resin
- Clasp
- Buckle
- Closure Type
- Buckle
- Embellishment
- Crystal
- Crystal
- Acrylic
- Dimensions
- 15.19 x 15.19 x 15.19 cm; 45.36 g
Style
- Style Name
- Classic
- Dial Shape
- Round
- Dial Colour
- Gray
- Band Color
- Black
- Theme
- Sports
- Face Style
- Digital
- Collection
- Ironman
Description
The Timex Ironman series has been a fixture on the wrists of athletes since its inception. This T5E231 model carries that tradition forward with a dependable digital quartz movement at its core. It is built for function, providing clear timekeeping and essential sport-timing features without unnecessary complication.
The watch's construction prioritises performance and comfort. A 44mm case crafted from durable black resin keeps the total weight exceptionally low, making it almost unnoticeable during exertion. The integrated resin strap is designed to withstand sweat and weather, securing the watch firmly and comfortably for any activity.
Its digital interface is designed for legibility at a glance, offering a 100-hour chronograph, countdown timer, and multiple alarms. With a water resistance rating across 100 metres, it is well-suited for surface swimming and general water exposure. The acrylic crystal, while not as scratch-resistant as sapphire, offers excellent shatter resistance appropriate for a sports watch.
Frequently Asked Questions
How deep can I go with the Timex Ironman Classic 100 T5E231?
The Timex Ironman Classic 100 T5E231 offers 100 metres of water resistance, making it suitable for swimming, snorkelling, and showering. It is not recommended for scuba diving or high-impact water sports where deeper pressures might be encountered. Always ensure the pushers are not activated underwater to maintain water integrity.
Is the Timex Ironman Classic 100 T5E231 durable enough for daily sports activities?
Yes, the Timex Ironman Classic 100 T5E231 is designed for durability. Its lightweight resin case and acrylic crystal provide good impact resistance, making it well-suited for various daily sports and training sessions. Timex built this watch to withstand the rigours of an active lifestyle.
What are the main functions of this watch for training purposes?
The Timex Ironman Classic 100 T5E231 is equipped with a chronograph featuring lap and split recall, allowing you to track your workout performance. It also includes sequential interval timers to structure your training and five customisable alarms to keep your schedule organised. These features make it a versatile tool for any active user.
How does the Timex Ironman Classic 100 compare to other digital sports watches in its price range?
The Timex Ironman Classic 100 T5E231 stands out with its proven reliability, comprehensive training features like lap/split recall, and the signature INDIGLO backlight for excellent visibility. While other brands offer digital watches, Timex's long-standing legacy in sports timing and its focus on user-friendly design often provide a compelling value proposition for active individuals seeking a dependable timepiece.
Is the 44mm case size of the Timex Ironman Classic 100 T5E231 suitable for all wrist sizes?
The 44mm case size of the Timex Ironman Classic 100 T5E231 is considered a full-size watch, generally suitable for men with average to larger wrist sizes, typically ranging from 6.5 to 8 inches. Its lightweight resin construction and adjustable resin strap contribute to a comfortable fit, even during extended wear or intense activity. For smaller wrists, it might appear somewhat prominent.
Editor's take
The Ironman T5E231 is a direct descendant of the original multi-sport digital watch. Its intended wearer values function over form and needs a reliable timer for training or daily life. This is the quintessential 'beater' watch, a tool that asks for little and is always ready to perform its duties.
Its most significant attribute is its focused design. The entire assembly, from the case to the integrated strap, is made of a tough, lightweight Resin. This makes the watch comfortable and durable for its purpose. Paired with the iconic Indiglo night-light, the large digital display provides excellent legibility in any condition, a benchmark for practical design.
A prospective owner should understand the material choices. The Acrylic crystal is shatter-resistant, a benefit during sports, but it will scratch more readily than mineral or sapphire glass. The water resistance rating of 100 metres is sufficient for swimming, but it lacks the robust construction and ISO certification of a true diver's watch.
For the athlete seeking a no-nonsense digital chronograph, this model is a foundational choice. It delivers essential timing functions with an intuitive interface and a build that withstands daily abuse. If you need a watch you can forget is on your wrist until you need it, the Ironman delivers on its original promise.
In categories
From the manufacturer

Timex Ironman Legacy
The Timex Ironman Classic 100, reference T5E231, continues a lineage of purpose-built timepieces. This 44.0mm full-size model is designed for active use, reflecting Timex's commitment to functional durability. Its design prioritises legibility and robust construction for consistent performance.

Reliable Quartz Movement
This Timex Ironman model is powered by a quartz movement, ensuring precise timekeeping with minimal user intervention. The quartz calibre provides consistent accuracy, a critical attribute for training and daily timing requirements. Its reliability makes it a practical choice for a utility watch.

Durable Resin Construction
The 44.0mm case of the T5E231 is crafted from resin, paired with an acrylic crystal, offering impact resistance suitable for active wear. Its black resin strap provides a secure and comfortable fit, designed to withstand regular use in various conditions. This material selection contributes to the watch's overall resilience.

100 Metre Water Resistance
The Timex Ironman Classic 100 is rated for 100 metres of water resistance, making it suitable for swimming and showering. This capability ensures the watch's integrity during aquatic activities without requiring special precautions for casual water exposure. The robust sealing protects the internal components effectively.

Functional Design Utility
The Timex Ironman Classic 100 T5E231 combines a 44.0mm resin case, quartz accuracy, and 100m water resistance into a cohesive, functional design. This timepiece is engineered for consistent performance in demanding environments, offering essential timing features without unnecessary complications. It serves as a reliable instrument for daily and athletic pursuits.
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