Side by side

Breitling Chronomat B01 42vsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

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

Breitling Chronomat B01 42

Owners and reviewers widely praise the Breitling Chronomat B01 42 for its exceptional fit and finish, with many calling the Rouleaux bracelet a work of art and the case and bracelet feeling like a "little tank." The dial execution is consistently noted as elegant and appealing, with the copper dial specifically highlighted as unique and dynamic. Some owners report excellent timekeeping, with one noting -3 to -2 seconds per day after demagnetization. The watch's styling is described as bold and loud by some, and its 42mm size with a 50.5mm lug-to-lug distance may wear large for some wrists, feeling more substantial than other 42mm watches. The polished bezel is noted as a fingerprint magnet. Overall, owners and reviewers rate the Breitling Chronomat B01 42 highly for its robust build quality and distinctive bracelet design.

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch offers a 300-meter depth rating and a caller-style GMT complication powered by the Caliber 6R54 movement, which provides a 72-hour power reserve. Reviewers note its refined clasp with extensive micro-adjustment. However, the movement's accuracy, ranging from +25 to -15 seconds per day, is considered a drawback by some. Overall, reviewers highlight the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch as a good reminder of Seiko's value, despite the wide accuracy range of its movement.

At a glance

16 of 29 specs differ
Diameter
Chronomat B01 4242mm
Prospex Sea 1968 Heritage Diver's GMT Watch42mm
Power Reserve
Chronomat B01 4270h
Prospex Sea 1968 Heritage Diver's GMT Watch72h
Water Resistance
Chronomat B01 42200m
Prospex Sea 1968 Heritage Diver's GMT Watch300m
MSRP
Chronomat B01 42
Prospex Sea 1968 Heritage Diver's GMT Watch$1,700

Full specifications

Case

6 specs
Thickness
15.1mm
13.3mm
Lug-to-Lug
46mm
48.6mm
Lug Width
22mm
20mm
Finish
Stainless steel
Brushed and polished
Water Resistance
200m
300m
Caseback
Solid

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Indices
Applied
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

4 specs
Caliber
Breitling B01
6R54
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,700
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