To use this watch, start by setting the time using the crown on the side of the case. You can operate the chronograph functions with the pushers to measure elapsed time. For everyday wear, it can handle splashes and short swims thanks to its 200 - meter water resistance, but avoid long - term submersion or high - pressure water activities. When it comes to maintenance, keep the watch clean by wiping it with a soft, dry cloth regularly. If the battery runs out, take it to a professional watchmaker for replacement to avoid any damage to the internal components.