How to set time on G-Shock G-100 / Casio 5158

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The Ultimate Guide to All G-SHOCKs — composed by Experts

Before using this guide, we recommend:

All settings are clearly explained and understandable.

How to set time on G-Shock G-100 Casio 5158-1

  1. In the Timekeeping Mode, hold down B for about two seconds, until “ADJ” and then the seconds’ digits flash on the display. Keep B depressed until the seconds’ digits flash.

  2. While the seconds’ digits are selected (flashing), press C to reset the seconds to 00. If you press C while the seconds’ count is in the range of 30 to 59, the seconds are reset to 00 and 1 is added to the minutes. If the seconds’ count is in the range of 00 to 29, the minutes’ count is unchanged.

  3. Press B to move the selection around the display in the above sequence.

  4. While hour or minutes are selected (flashing), press C to increase the setting.

    Holding down C changes the current setting at high speed. While the 12/24-hour setting is selected, press C to switch between the two formats.
    If you do not operate any button for a few minutes while a selection is flashing, the flashing stops and the watch goes back to the Timekeeping Mode automatically.

Setting the Analog Time

How to set time on G-Shock G-100 Casio 5158-2

Perform the procedure below when the time indicated by the analog hands does not match the time of the digital display.

  • The minute hand advances 1/3 of a minute each time the seconds count in the digital display reaches 00, 20 and 40 seconds.

To adjust the analog time

In any mode, each press of A advances the hands 20 seconds. Holding down A advances the hands at high speed.

  • Note that the hands can be advanced only and cannot be moved back. Take care so you do not go past the setting you want to make.

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Comments

2 responses to “How to set time on G-Shock G-100 / Casio 5158”

  1. Derek Avatar
    Derek

    Spot on I got the information I needed within seconds, Thanks

  2. Justin Mitchell Avatar
    Justin Mitchell

    easiest instructions for setting a watch I’ve come across huge g shock fan I have 3

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