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Breitling Superocean Heritage B20 AutomaticvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's 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 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 Marinemaster Marinemaster 1968 Heritage Diver's Watch

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch is praised for its premium finishing, often described as Zaratsu-like, and robust build quality, with owners finding its 42mm case and 4 o'clock crown appealing for wearability. Some reviewers note its secondary GMT function and quieter bezel clicks may not suit all preferences, while one owner reported bezel misalignment issues. The watch is powered by the Caliber 8L45 automatic movement, offering a 72-hour power reserve and an accuracy rating of -5/+10 seconds per day, though some owners question its value proposition at its price point. On balance, owners and reviewers rate the Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch highly for its exceptional finishing and refined tool-like aesthetic.

At a glance

16 of 29 specs differ
Diameter
Superocean Heritage B20 Automatic42mm
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Power Reserve
Superocean Heritage B20 Automatic70h
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch50h
Water Resistance
Superocean Heritage B20 Automatic200m
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
MSRP
Superocean Heritage B20 Automatic$5,800
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$2,900

Full specifications

Case

6 specs
Diameter
42mm
42.6mm
Thickness
14.35mm
13.4mm
Lug-to-Lug
49.3mm
Finish
Stainless steel
Brushed and polished
Water Resistance
200m
300m
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

4 specs
Caliber
Breitling B20 (Manufacture)
8L35
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
50h
Jewels
0
26

Pricing

1 specs
MSRP
$5,800
$2,900
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