Using your G - Shock GA2200 is a breeze. To set the time and other functions, simply use the enlarged side buttons. They're easy to press and very responsive. When it comes to water, this watch is water - resistant up to 200 meters, so you can wear it while swimming or snorkeling, but avoid high - pressure water activities like scuba diving. For maintenance, keep it clean by wiping it with a soft, dry cloth regularly. If you want to change the band, use the slide lever - type mechanism for a quick and hassle - free replacement. Store it in a cool, dry place when not in use to keep it in top condition.