How to Reset a Timex Marathon Watch After a Battery Replacement

Written by julius vandersteen
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The Timex Marathon is a battery-powered digital watch with a light that illuminates its face. Besides displaying the time, the Marathon has a timer, stopwatch, alarm and pulse mode to calculate heart rate. You can set the watch to display in 24-hour military format or in 12-hour a.m./p.m. mode. You must reset your watch after replacing the battery.

Skill level:


  1. 1

    Press and hold the "Set/Clear" button on the bottom right of the Timex Marathon. A message will appear reminding you to hold the button for two seconds.

  2. 2

    Press the "Start/Stop" button at the top of the watch to advance the hour until it reaches to the correct time.

  3. 3

    Press the "Mode" button at the bottom of the watch to adjust the minutes. Press the "Start/Stop" button to advance to the correct time. Set the date in the same way.

  4. 4

    Press the "Set/Clear" button to save your changes.

Tips and warnings

  • Press and release the "Start/Stop" button to choose 12-hour or 24-hour format.

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