Using your G - Shock GM6900G - 9DR watch is a breeze. To set the time and date, just use the buttons on the side of the watch. For the stopwatch and countdown timer, press the corresponding buttons to start, stop, or reset. The multi - function alarm can be set to your preferred time. When you need to see the time in the dark, press the backlight button.
Here are some important things to note. Don't press the buttons when the watch is underwater. Although it's 200m water - resistant, it's better to avoid long - term immersion in hot water or saltwater. Also, keep it away from strong magnetic fields.
For maintenance, clean the watch regularly with a soft, dry cloth. If the resin band gets dirty, you can gently wash it with mild soap and water. Make sure to dry it thoroughly before putting it back on. This way, your watch will stay in great condition for a long time.