Using this TAG Heuer watch is a breeze. To set the time, use the crown on the side of the watch. For the chronograph function, press the top button to start and stop, and the bottom one to reset. When it comes to wearing it, make sure the strap is adjusted to a comfortable fit. As for care, keep it away from extreme temperatures and magnetic fields. Wipe it gently with a soft cloth regularly to keep it looking new. If the battery needs replacing, it's best to take it to a professional watch repairer.