Swiss-made, automatic, 31.80 mm, 28 jewels, 70-hour power reserve, 4Hz (28,800 VPH). Hour, minutes, seconds. COSC certified. Tudor MT5612 architecture.

The Breitling Manufacture caliber B20 is a COSC-certified chronometer based on the Tudor Caliber MT5612.

Posted by:Jason Pitsch

A former Fortune 100 executive who left the corporate world to found Professional Watches. He's obsessed with aesthetics, quality, precision, horology, and watch brands that transcend time. (View article archive.)