Blancpain Fifty Fathoms AutomatiquevsBreitling Chronomat B01 42

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures

Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Blancpain Fifty Fathoms Automatique at true scale

Fifty Fathoms Automatique

Breitling Chronomat B01 42 at true scale

Chronomat B01 42

Diameter

45mm

42mm

Thickness

15.4mm

15.1mm

lowest

Water Resistance

300m

highest

200m

Power Reserve

120h

highest

70h

MSRP

$52,600

$24,600

lowest

Movement

1315

Breitling B01

Case

7 specs
Diameter
45mm
42mm
Thickness
15.4mm
15.1mm
Lug-to-Lug
n/a
n/a
Lug Width
n/a
22mm
Material
Red gold
18kt Pink Gold
Finish
Red gold
Stainless steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Dial Color
n/a
n/a

Movement

4 specs
Caliber
1315
Breitling B01
Power Reserve
120h
70h
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$52,600
$24,600
Keep your wishlist and collection together in the appExplore the app

Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Blancpain Fifty Fathoms Automatique

Owners widely praise the Blancpain Fifty Fathoms Automatique for its mesmerizing feel on the wrist and timeless design, featuring high-quality finishing and a virtually scratch-proof sapphire crystal bezel with generous Super-LumiNova. Reviewers consistently flag excellent dial legibility, especially underwater, and the rugged, lightweight titanium feel of some variants. The in-house Caliber 1315 movement is noted for its efficiency and haute horlogerie decorations. Some owners report the 45mm model selling significantly below its retail price. A reviewer found the engraved case name unnecessary, and some note the 21.5mm lug width and 4:30 date window as drawbacks. Overall, owners and reviewers rate the Blancpain Fifty Fathoms Automatique highly for its exceptional finishing and timeless dive watch design.

Breitling Chronomat B01 42

Breitling Chronomat B01 42 owners and reviewers widely praise its refined Rouleaux bracelet, excellent case and dial finishing, and the robust Breitling B01 movement. Many consider it a compelling "all-in-one watch" suitable for daily wear, with some highlighting the dynamic sunburst finish of copper dials and the overall build quality. However, multiple sources note the 42mm case wears larger than expected, with a long lug-to-lug distance making it feel more like a 44mm watch and potentially too thick or large for smaller wrists. The polished bezel is noted as a fingerprint magnet, and some find the butterfly clasp generic, while one owner reported a magnetized example running significantly fast before demagnetization. On balance, owners and reviewers rate the Breitling Chronomat B01 42 highly for its impressive finishing and versatile design, despite its substantial wrist presence.