Skip to content
Breitling Chronomat B31 Automatic 40

Breitling Chronomat B31 Automatic 40

AutomaticSteel

Ref. AB3114101L1A1

Collection: ChronomatCase size: 40mmMovement: B31

Breitling Chronomat B31 Automatic 40, reference AB3114101L1A1, is a dive watch in a 40 mm steel case. The case measures 10.99 mm thick and carries a screw-locked crown. A sapphire crystal covers the green dial, and the sapphire display back reveals the movement beneath. Inside sits the self-winding B31 calibre, a chronometer-certified manufacture movement with a power reserve of around 78 hours. The dial shows a date aperture and a central seconds hand. A steel bracelet completes the watch. The screw-locked crown helps hold the case to its 200 metre water resistance rating.

Add to my inventory

Free account required - pre-fills all specs automatically

Last updated 12 Jul 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

40mm

Thickness

10.99mm

Lug Width

18.1mm

Case Material

Steel

Water Resistance

200m

Crystal

Sapphire Crystal

Bezel Material

Steel

MOVEMENT

Movement Type

Automatic

Caliber

B31

Power Reserve

78h

Frequency

28,800 vph (4 Hz)

Jewels

26 jewels

DIAL

Dial Color

Green

BRACELET/STRAP

Bracelet/Strap

Steel

FEATURES & COMPLICATIONS

Central secondsChronometerDateDisplay backRotating BezelScrew-Down Crown

More from Breitling

Show all →

Other watches with the B31 calibre

Show all →

FOR WATCH DEALERS

Trading the Breitling Chronomat B31 Automatic 40?

Clone any catalog watch into your stock, sync it to Chrono24 and eBay, and invoice it with your own tax settings.