Using your TAG Heuer Carrera watch is a breeze. Just set the time, day, and date according to your local time. The watch has a 100m water resistance, so it can handle splashes and short swims, but avoid high - pressure water activities like diving. When it comes to maintenance, keep the watch clean by wiping it with a soft, dry cloth regularly. If the watch gets wet, dry it thoroughly. Have the watch serviced by a professional every few years to ensure it runs smoothly. And remember, don't expose the watch to extreme temperatures or strong magnetic fields as they can affect its performance.