Using this Tag Heuer watch is quite straightforward. Just wind the crown gently to set the time and date. When using the chronograph function, press the top button to start and stop, and the bottom one to reset. As for maintenance, keep it away from water as much as possible, even though it might be water - resistant to some degree. Avoid hitting it against hard objects to prevent damage. Every few years, it's a good idea to have it serviced by a professional watchmaker to keep it running smoothly.