Instruction manuals for chronograph watches are usually available on the manufacturer's website for the particular model of watch. Some manufacturers also offer customer care contact information that allows users to get in touch with support personnel who can help them with specific questions.
A chronograph watch is one with a stopwatch or timer built into the watch's face. The chronograph is generally operated by one or more of the buttons found on the sides of watch. These buttons start, stop and reset the chronograph without changing or interfering with the time on the watch. The length of time a chronograph can record varies from watch to watch.