Side by side

Breitling Superocean Heritage B20 AutomaticvsSeiko 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 Superocean Heritage B20 Automatic

Owners and reviewers widely praise the Breitling Superocean Heritage B20 Automatic for its attractive, well-executed polished steel case and ceramic bezel, with the 42mm size offering good legibility and comfort for many, though some find it pushes the limits of smaller wrists. The blue dial, polished indices, and steel mesh bracelet are frequently highlighted for their balanced aesthetic, and dial printing, date wheel, and hand alignment are noted as clean. One owner reported timegrapher numbers of +2s/d. The lume is considered good but less prominent than on other sports watches. Some owners have noted potential issues with bezel alignment, a gap between the bracelet and case, and a "crunchy" bezel rotation feel at this price point. Overall, owners and reviewers rate the Breitling Superocean Heritage B20 Automatic highly for its stylish design and comfortable wearability, despite some reservations about lume and bezel action.

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

16 of 29 specs differ
Diameter
Superocean Heritage B20 Automatic42mm
Prospex Sea41.3mm
Power Reserve
Superocean Heritage B20 Automatic70h
Prospex Sea72h
Water Resistance
Superocean Heritage B20 Automatic200m
Prospex Sea300m
MSRP
Superocean Heritage B20 Automatic$5,800
Prospex Sea$1,100

Full specifications

Case

6 specs
Diameter
42mm
41.3mm
Thickness
14.35mm
12.5mm
Lug-to-Lug
48.2mm
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 B20 (Manufacture)
6R55
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$5,800
$1,100
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