Timex Ironman Essential 10 vs Timex Ironman Classic 100

Both are Timex Ironman full-size resin watches with 100m water resistance and a digital quartz movement. The Essential 10 is the leaner training tool: 42mm case, 10-lap memory, 100-hour chronograph and 24-hour countdown timer. The Classic 100 is the bigger, simpler watch: 44mm case, large glanceable display, INDIGLO backlight and the five-button layout owners have trusted for decades. Buy the Essential 10 for lap-based workouts and a smaller wrist fit; buy the Classic 100 for legibility in the dark and a proven all-rounder.

• Choose the Ironman Essential 10 if you time intervals and laps and want a 42mm case that sits flatter on the wrist.
• Choose the Ironman Classic 100 if you want the biggest, easiest-to-read display with a backlight for night runs and swims.