Name: Premier B25 Datora 42
Brand: Breitling
SKU: AB2510201K1P1
Price: 440000 TWD
Availability: OutOfStock

Question 1

What is the Breitling Premier B25 Datora 42?

Accepted Answer

It is one of the most sophisticated models in Breitling's elegant Premier collection—a 42 mm chronograph that adds a complete calendar (day, date and month) together with a moonphase display. "Datora" is a historic Breitling name from the 1940s for this calendar-chronograph format, revived as part of the Premier Heritage line. With its refined dress-watch styling, in-house movement and balanced dial, the Premier B25 Datora 42 is positioned as a connoisseur's piece that blends everyday elegance with genuine horological complication.

Question 2

What materials, dial and strap does the Premier B25 Datora 42 use?

Accepted Answer

This reference is a 42 mm stainless-steel case, with an 18k red-gold execution also offered in the Premier collection. It is best known for its warm copper-toned (salmon) dial, framed by Arabic numerals and a syringe-style handset, with the calendar apertures and moonphase integrated into a balanced layout. A cambered sapphire crystal with anti-reflective coating protects the dial, and the watch is worn on a semi-shiny alligator leather strap, reinforcing its elegant, dress-oriented character.

Question 3

What movement powers the Premier B25 Datora 42 and is it COSC-certified?

Accepted Answer

It is driven by the Breitling Manufacture Caliber B25, an automatic chronograph movement that integrates a complete calendar and moonphase. It offers around 70 hours of power reserve and is officially COSC-certified as a chronometer, guaranteeing accuracy of -4/+6 seconds per day. The B25 belongs to Breitling's family of in-house Premier calibers (alongside the Manufacture Caliber 01 chronograph and B09 hand-wound), bringing manufacture credibility to one of the line's most complication-rich watches.

Question 4

What is a Datora and what does the complete calendar with moonphase show?

Accepted Answer

"Datora" is Breitling's term for a chronograph paired with a complete (or full) calendar. Unlike a simple date, a complete calendar simultaneously displays the day of the week, the date and the month, here combined with a moonphase indicator that tracks the lunar cycle. It is called "complete" rather than "perpetual" because it does not automatically account for months of differing lengths, so it requires five manual correction per year for each month shorter than 31 days. The result is an information-rich yet elegant dial. Discover the Premier collection and its blend of elegant design with sophisticated watchmaking complications.

Question 5

How do I set the calendar, moonphase and chronograph on the Premier Datora?

Accepted Answer

Time and winding are handled via the crown (the B25 is automatic and also winds on the wrist). The calendar indications and moonphase are adjusted using recessed correctors on the case side with the supplied tool. To avoid damaging the mechanism, avoid adjusting the calendar or moonphase between roughly 9 PM and 3 AM, when the date change is engaged. The chronograph is operated with the pushers at 2 and 4 o'clock. For a complication of this type, always adjust the calendar functions with care and outside the date-change period.

Question 6

Is the Premier B25 Datora 42 water resistant?

Accepted Answer

It is water resistant to 100 metres (10 bar), which comfortably covers everyday wear, rain and accidental splashes. As an elegant calendar-chronograph usually worn on an alligator leather strap, it is not intended for swimming or diving, and prolonged water contact will shorten the life of a leather strap. Keep the crown pushed in before any exposure to water and have the seals checked at routine service intervals.

Question 7

What is the Premier's heritage and what warranty does the Datora carry?

Accepted Answer

The Premier was conceived by Willy Breitling in the early 1940s as the brand's first style-led line, and the Datora calendar-chronograph dates from that same era—revived today in the Premier Heritage collection. With its in-house mechanical movement, the Premier B25 Datora 42 qualifies for Breitling's extended warranty: 2 years internationally, extendable to 5 years on the manufacture movement subject to registration and a water-resistance test every two years at an authorized service center. Always have this complication serviced by an authorized Breitling service centre.

Premier B25 Datora 42

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