Using your Tag Heuer Aquaracer is easy. Just put on the steel strap and buckle it with the folding clasp. The watch is water - resistant, but don't press the buttons underwater. To keep it in great shape, clean it regularly with a soft, dry cloth. Avoid exposing it to extreme temperatures or magnetic fields. If you need a battery replacement, take it to a professional watchmaker. This watch is built to last, so take good care of it and it'll serve you well for a long time.