![BREITLING PREMIER B01 CHRONOGRAPH 42 42mm AB0145211G1A1 Opaline](https://askme.watch/sites/default/files/styles/watch_full_content/public/watch/images/Sans%20titre%202.jpg?itok=sQMJoynB)
![BREITLING PREMIER B01 CHRONOGRAPH 42 42mm AB0145211G1A1 Opaline](https://askme.watch/sites/default/files/styles/watch_full_content/public/watch/images/Sans%20titre%202.jpg?itok=sQMJoynB)
![BREITLING PREMIER B01 CHRONOGRAPH 42 42mm AB0145211G1A1 Opaline](https://askme.watch/sites/default/files/styles/watch_full_content/public/watch/images/19_Breitling%20Premier%20B01%20Chronograph%2042_caseback_Ref.%20AB0145331K1A1_RGB.%20-%20copie_0.jpg?itok=w4O4cn5g)
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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.