What?s the difference between a chronograph and a chronometer?
A chronograph is a name given to a multifunction sport watch with a stopwatch function. Most have two or three sub-dials, or mini-dials, for measuring minutes and hours. A chronometer, on the other hand, is a precision watch that has been rigorously tested by the Control Officile Suisse de Chronometers (COSC), an official watch testing laboratory in Switzerland, to keep accurate time in various temperatures and positions over a 15-day period. The watch must lose no more than five seconds per day in order to be designated a chronometer.
