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.

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, robust build, and the refined Breitling Manufacture Calibre 01 movement, noting its accurate timekeeping and positive pusher feel. The distinctive Rouleaux bracelet is frequently highlighted for its comfort and quality, contributing to its suitability for daily wear across various settings. However, some owners find the 42mm case and its overall dimensions to be large or thick for smaller wrists, and the polished bezel is noted as a fingerprint magnet. Mixed reactions exist regarding its bold aesthetic, with some appreciating its retro charm and others finding it polarizing, particularly in bicolor configurations. On balance, owners and reviewers rate the Breitling Chronomat B01 42 highly for its well-executed chronograph functionality and distinctive design, with the quality of the bracelet and finishing being key reasons for its positive reception.

Seiko Prospex Sea

Seiko Prospex Sea models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

At a glance

18 of 29 specs differ
Diameter
Chronomat B01 4242mm
Prospex Sea41.3mm
Power Reserve
Chronomat B01 4270h
Prospex Sea72h
Water Resistance
Chronomat B01 42200m
Prospex Sea300m
MSRP
Chronomat B01 42$11,150
Prospex Sea$1,100

Full specifications

Case

8 specs
Diameter
42mm
41.3mm
Thickness
15.1mm
12.5mm
Lug-to-Lug
46mm
48.2mm
Lug Width
22mm
20mm
Material
Stainless Steel & 18k Red Gold
Stainless Steel
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
6R55
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$11,150
$1,100
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