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The Breitling Navitimer Rattrapante runs on the Breitling Caliber 03 automatic movement also known as the in-house caliber B03. This split-seconds chronograph movement has the designation of "Chronometer".
A chronometer means that Breitling took the caliber (the mechanical movement) to a third party called COSC who puts the caliber through many tests to achieve a minimum accuracy and precision of -4/+6 seconds per day which is considered a fantastic accuracy score for a mechanical watch.
This notable watch has a 70-hour power reserve which is about 50%-60% higher than the power reserve duration you can expect from your average self-winding cheap fake watches. One of the common things that you will hear Breitling owners brag about is the way these watches are built. They are rock-solid tanks that are built tough and built to last.