Casio first introduced its shock-resistant G-Shock watches in 1983 and later added a number of extra features to the watches in the early 1990s. While the additional features made the watch more versatile, navigating the multitude of functions made simply setting the time a bit confusing. One simple rule of thumb to remember is that the bottom left button function of the G-Shock is equivalent to a plus or up, while the bottom right button function is equivalent to a minus or down.

Press the top left button on your G-Shock watch to activate the time setting mode. Press the bottom left button until the seconds field on the watch face starts to flash. Use the bottom left (up or increase) and bottom right (down or decrease) buttons to set the seconds.

Press the bottom left button once on your G-Shock to make the minutes field flash. Press the top left and top right buttons to adjust and set the minutes field to the desired setting.

Press the bottom left button four times on your G-Shock to make the hour field flash. Press the bottom left and bottom right buttons to adjust and set the hour field to the desired setting.

Press the bottom left button once on your G-Shock to make the day field flash. Press the top right and top left buttons to adjust and set the day field to the desired setting.

Press the bottom left button once on your G-Shock to make the month field flash. Press the bottom left and bottom right buttons to adjust and set the month to the desired setting.

Press the bottom left button on your G-Shock once to make the year field flash. Press the top right button and the "B" button to adjust and set the year to the desired setting.

Press the top right button twice to deactivate the time setting function when all of your adjustments have been made.