What are the buttons on a watch for?

Among the buttons, the one situated above the crown often serves as the start/stop button. This feature is crucial for initiating and halting various timekeeping functions, such as measuring elapsed time during an event or activity.

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Conversely, the button positioned below the crown commonly functions as the lap/reset button. This allows wearers to mark intermediate times during a chronograph session and reset the chronograph to its initial state, ready for the next use.

The large seconds hand on watches equipped with chronograph functionality is integral to its operation. This prominent hand is dedicated solely to the chronograph timekeeping, distinct from the watch's primary timekeeping mechanism.

The use of a dedicated seconds hand for the chronograph ensures precision and clarity when measuring elapsed time. It enables wearers to keep track of split times or overall duration with utmost accuracy.