Watch Almanac
Breitling

Chronomat B01 42

Ref. AB0134101B1A1

Case diameter
42 mm
Manufacturer spec
Lug-to-lug
—
Not published
Thickness
15.1 mm
Manufacturer spec
Lug width
22 mm
Manufacturer spec

Retail price $9,550 (US, Oct 2026)

We have not verified this watch’s lug-to-lug yet, so we can’t draw it on a wrist. Case diameter alone is a poor guide to fit.

How the Chronomat B01 42 wears

At 15.1 mm thick it is thicker than 87% of the 24 other chronograph watches we've measured, so expect it to sit tall on the wrist.

Its 22 mm lug width is one of the most common strap sizes; 27 other watches here share it, so aftermarket straps are easy to find.

Specifications

Reference
AB0134101B1A1
Collection
Chronomat
Status
In production
Case material
stainless steel
Crystal
sapphire
Water resistance
200 m
Bezel
unidirectional ratcheted, rider tabs
Dial
black
Strap / bracelet
steel Rouleaux bracelet
Style
Chronograph, Sport

Movement

Caliber
Breitling 01
Type
automatic
Power reserve
70 hours
Frequency
28,800 vph (4 Hz)
Jewels
47
Accuracy
COSC-certified chronometer

Takes 22 mm straps. See other 22 mm watches and straps.

Same 22 mm lug width

All 22 mm watches

These take the same straps as the Chronomat B01 42.

Sources