Premier Heritage B25 Datora 42 Singapore Diamond Jubilee Edition

In Context

At 42 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 48 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

AB25101A1K1P1 stands on its own in this catalogue — no other reference here shares its base number. It pairs a red gradient dial with a stainless steel case. Introduced in 2025.

Self-winding movement with column-wheel actuated chronograph, full calendar, and moon phase indicator.

2 other watches in the library run the Breitling Caliber B25.

Breitling

Premier Heritage B25 Datora 42 Red Gold / Silver

RB2510371G1P1 · 42 mm

Breitling

Premier Heritage B25 Datora 42 Stainless Steel / Copper

AB2510201K1P1 · 42 mm