Side by side

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

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

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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

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and comfortable wearability, offering good value for its price point. Owners and reviewers highlight the attractive silver/white sunray dial, blue ceramic bezel, and the premium feel of the improved bracelet clasp with excellent micro-adjustment. The Caliber 6R54 movement provides a 72-hour power reserve, and real-world accuracy often exceeds its stated range of +25 to -15 seconds per day, with some owners reporting figures around +3 to +5 seconds per day. However, the caller-style GMT functionality is a point of contention for some, who find the GMT scale difficult to read and prefer a flyer GMT at this price. Some also find the crown position at 4 o'clock undesirable, and a few note a lack of dial contrast or illegibility of the inner bezel.

At a glance

12 of 29 specs differ
Diameter
Chronomat B01 4242mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
Chronomat B01 4270h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
Chronomat B01 42200m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
Chronomat B01 42$9,550
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

4 specs
Thickness
15.1mm
12.9mm
Lug-to-Lug
0mm
48.6mm
Lug Width
22mm
20mm
Finish
Stainless steel

Crystal & Dial

2 specs
AR Coating
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
Breitling B01
Seiko 6R54
Power Reserve
70h
72h
Jewels
0
24
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$9,550
$1,500
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