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![OMEGA SPEEDMASTER SPEEDMASTER 57 40.5mm 332.10.41.51.01.001 Black](https://askme.watch/sites/default/files/styles/watch_full_content/public/watch/images/OMEGA_215.30.46.21.03.001_caseback%20%2840%29.jpg?itok=uz25m75g)
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![OMEGA SPEEDMASTER SPEEDMASTER 57 40.5mm 332.10.41.51.01.001 Black](https://askme.watch/sites/default/files/styles/watch_full_content/public/watch/images/OMEGA_215.30.46.21.03.001%20%2853%29.jpg?itok=z8qDpAhG)
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Chronograph watches can measure and display elapsed time. Usually three subcounters on the dial display the elapsed seconds, minutes and hours.
The date is a small window on the dial which indicates the day of the month (between 1 and 31).
Watches featuring a small seconds have a smaller subcounter, usually located at 6h, which indicates seconds.