The Breitling Premier B25 Datora 42mm (Ref. AB2510201K1P1) represents the most refined Breitling chronograph through complete calendar and moon-phase complication honouring three generations of inventors, Léon, Gaston, and Willy Breitling, who described the Premier as bearing “the unmistakable stamp of impeccable taste.” The “Datora” name revived from the 1940s denotes the complete calendar chronograph displaying day, date, month, and moon phase through heritage-inspired design featuring rectangular chronograph pushers, Arabic numerals, and grooved case sides.

At 42mm with 15.35mm thickness through stainless steel construction, this provides refined chronograph presence whilst the vintage-inspired hands and open sapphire caseback celebrate Premier heritage with contemporary manufacture movement sophistication. The cambered sapphire crystal glare-proofed on both sides ensures optimal clarity whilst the brown alligator leather strap with curved lugs creates elegant presentation appropriate for the Premier’s distinguished character.

The Manufacture Calibre B25 delivers reliable 48-hour power reserve with COSC certification through 32-jewel construction operating at 28,800 vibrations per hour whilst providing 1/4 second chronograph precision with 30-minute totalizer. The comprehensive day, date, month, and moon-phase calendar display represents Breitling’s highest level of watchmaking within the Premier collection.

The screwed-in sapphire caseback reveals the decorated movement whilst the fixed bezel maintains clean elegant lines essential for the Premier’s sophisticated character. The 100m water resistance provides practical daily capability. The Premier B25 Datora is Breitling at its most watchmaker rather than its most aviator, combining a complete calendar, moon phase, and COSC chronograph in a 42mm case that wears more like a grand complication than a sports instrument.