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Breitling Superocean Heritage B31 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 B31 Automatic

Owners widely praise the Breitling Superocean Heritage B31 Automatic's revived, characterful design with '50s charm and its comfortable wearability, with some noting the lugs hugging the wrist and a massaging mesh bracelet. The new Breitling B31 movement offers a 78-hour power reserve and COSC certification, and the 42mm case size is preferred by some over larger variants. Reviewers and owners note the pared-back dive bezel may impact legibility, and opinions are divided on the white date wheel at 6 o'clock. Some find Breitling watches, including this model, too large or chunky for smaller wrists, and criticism is directed at the Sellita SW200 movement at its price point by some owners. Overall, owners rate the Breitling Superocean Heritage B31 Automatic highly for its comfortable wearability and revived, characterful design.

Seiko Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch

The Seiko Prospex Marinemaster 1968 Heritage Diver's Watch is widely praised for its excellent quality and finishing, with reviewers and owners noting its GS-level craftsmanship and Zaratsu-inspired polishing. Owners appreciate its refined design, comfortable case shape, and the 4:00 crown position, with some finding it more manageable on the wrist than other models. The Caliber 8L45 movement offers a 72-hour power reserve and accuracy within -5/+10 seconds per day, and the bracelet features an improved clasp with an extension system. However, some find the price point high, and one reviewer noted the unsigned winding crown as a missed opportunity. On balance, owners and reviewers rate the Seiko Prospex Marinemaster 1968 Heritage Diver's Watch highly for its premium finishing and tool-like appearance at its price point.

At a glance

16 of 29 specs differ
Diameter
Superocean Heritage B31 Automatic42mm
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch42.6mm
Power Reserve
Superocean Heritage B31 Automatic78h
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch72h
Water Resistance
Superocean Heritage B31 Automatic200m
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch300m
MSRP
Superocean Heritage B31 Automatic$6,500
Prospex Marinemaster Marinemaster 1968 Heritage Diver's Watch$3,600

Full specifications

Case

6 specs
Diameter
42mm
42.6mm
Thickness
12.03mm
14.1mm
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 B31 (Manufacture Breitling & AMT)
8L45
Beat Rate
0 vph
28,800 vph
Power Reserve
78h
72h
Jewels
0
35

Pricing

1 specs
MSRP
$6,500
$3,600
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