Top Time B31 Stainless Steel / Silver / Bracelet

In Context

At 38 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 10.3 mm thick it is about average for a modern wristwatch. 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. 78 hours of reserve puts it well past a weekend — several days off the wrist and it is still going. At 28,800 vph the seconds hand advances 8 times a second.

AB3113281A1A1 stands on its own in this catalogue — no other reference here shares its base number. It pairs a silver matte dial with a stainless steel case. Introduced in 2025.

The B31 is Breitling's first in-house three-hand movement, introduced in 2025 with the Top Time B31 and the Superocean Heritage B31. It powers 29 watches in this library. Until it arrived, every three-hand Breitling ran an ETA, Sellita or Tudor base. The B31 is Breitling's own: an automatic with a date, 28.4 mm across and 4.8 mm high, with 26 jewels, a beat of 28,800 vph and a 78-hour reserve from a single barrel, certified by the COSC. Its reserve and its thinness are the points, and it is the movement Breitling now builds its slimmer three-handers around. In the library it powers 22 [Superocean Heritage](/brands/breitling/superocean-heritage) references, the B31 Automatic in 42 mm and 44 mm, and 7 [Top Times](/brands/breitling/top-time) at 38 mm and 40 mm. Cases run from 38 mm to 44 mm, with 42 mm the most common. 4 are limited editions. The [B20](/calibers/breitling-caliber-b20), the Tudor-built movement, is what it replaced in the Superocean Heritage, the [Caliber 17](/calibers/breitling-caliber-17) the ETA base before that, and the [B01](/calibers/breitling-caliber-b01) the in-house chronograph it now sits beside.

28 other watches in the library run the Breitling Caliber B31.

Breitling

Top Time B31 Stainless Steel / Green

AB3113171L1X1 · 38 mm

Breitling

Superocean Heritage B31 Automatic 40 Kelly Slater / Rubber

AB31101A1C1S1 · 40 mm

Breitling

Superocean Heritage B31 Automatic 42 Stainless Steel / Black / Rubber

AB3111241B1S1 · 42 mm

Breitling

Superocean Heritage B31 Automatic 44 Stainless Steel / Green / Milanese

AB3112361L1A1 · 44 mm