Using this watch is easy. Just put it on your wrist like any other watch. To set the time, date, and week display, follow the instructions in the user manual. When you're out swimming or in the rain, you don't have to worry about water damage as it's water-resistant. However, avoid pressing the buttons underwater to keep the water resistance intact. As for maintenance, clean the watch regularly with a soft, dry cloth. Store it in a cool, dry place when not in use. If it gets scratched, you can take it to a professional for polishing. That way, your watch will stay in great shape for a long time.