Side by side

Breitling Chronomat B01 42vsSeiko Prospex Sea

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

Chronomat B01 42
BreitlingChronomat B01 42
MSRP $24,600
Prospex Sea
SeikoProspex Sea
MSRP $900
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 widely praise the Breitling Chronomat B01 42 for its excellent finishing, refined Rouleaux bracelet, and the robust B01 movement. The dial finishing, particularly on copper and copper variants, is highlighted for its dynamic sunburst effect. Some owners consider it an "all-in-one watch" suitable for daily wear due to its ruggedness and chronograph complication. However, multiple sources note that the 42mm case wears larger than its stated size, with a long lug-to-lug distance making it feel closer to 44mm and potentially too large for smaller wrists. The polished bezel is also mentioned as a fingerprint magnet, and one owner reported a magnetized example running significantly fast before demagnetization. On balance, owners and reviewers appreciate the Breitling Chronomat B01 42 for its impressive build quality and distinctive design, despite its substantial wrist presence.

Seiko Prospex Sea

Owners widely praise the Seiko Prospex Sea for its excellent lume, robust build, and value, with many highlighting the comfortable 4 o'clock crown and reliable movements. Reviewers note impressive case finishing and attractive dials, with specific models lauded for their gradient blue designs and smooth bezel actions. Accuracy figures vary, with one owner reporting +9 seconds/day after demagnetization, while others find the watches to be good first "proper" watches. Some owners find the stock rubber straps uncomfortable or the overall size substantial on smaller wrists. On balance, owners and reviewers rate the Seiko Prospex Sea highly for its combination of strong dive watch functionality and appealing design at its price point.

At a glance

16 of 29 specs differ
Diameter
Chronomat B01 4242mm
Prospex Sea41mm
Power Reserve
Chronomat B01 4270h
Prospex Sea70h
Water Resistance
Chronomat B01 42200m
Prospex Sea200m
MSRP
Chronomat B01 42$24,600
Prospex Sea$900

Full specifications

Case

7 specs
Diameter
42mm
41mm
Thickness
15.1mm
12.3mm
Lug-to-Lug
46mm
46.9mm
Lug Width
22mm
20mm
Material
18kt Pink Gold
Stainless Steel
Finish
Stainless steel
Brushed and polished
Caseback
Solid

Crystal & Dial

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

Movement

3 specs
Caliber
Breitling B01
Seiko 6R35
Beat Rate
0 vph
28,800 vph
Jewels
0
24

Pricing

1 specs
MSRP
$24,600
$900
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