Side by side

Breitling Superocean AutomaticvsSeiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition

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 Automatic

Owners widely praise the Breitling Superocean Automatic for its excellent fit and finish, comfortable bracelet with micro-adjustment, and a fresh design that some find stunning, particularly the blue ceramic bezel and white dial. The watch features a satisfyingly clicking ceramic bezel that is easy to operate and a vibrant dial with luminous hands and hour plots. One owner reports their 42mm model runs about +6 seconds per day, while others note that Breitling watches can sometimes lose time due to magnetization, which can be corrected under warranty. The Breitling Superocean Automatic has a power reserve of approximately 42 hours. Overall, owners rate the Breitling Superocean Automatic highly for its design and build quality at its price point.

Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition

The Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition is praised for its distinctive blue sea ice-inspired dial with a gradient effect and textured finish, celebrating its partnership with JAMSTEC. It is powered by the automatic Calibre 8L45 movement, which provides a 72-hour power reserve. The watch features a 42.6mm stainless steel case with a super-hard coating, a ceramic bezel, and a dual-curved sapphire crystal, offering 300m water resistance. Accuracy is rated between -5/+10 seconds per day. Overall, reviewers highlight the unique dial design and robust specifications as key strengths of the Seiko Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition.

At a glance

14 of 29 specs differ
Diameter
Superocean Automatic42mm
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition42.6mm
Power Reserve
Superocean Automatic38h
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition72h
Water Resistance
Superocean Automatic300m
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition300m
MSRP
Superocean Automatic$5,700
Prospex Marinemaster Marinemaster 1968 Heritage JAMSTEC Limited Edition$3,900

Full specifications

Case

5 specs
Diameter
42mm
42.6mm
Thickness
12.56mm
14.1mm
Lug-to-Lug
49.3mm
Lug Width
0mm
20mm
Finish
Stainless steel

Crystal & Dial

3 specs
Crystal Shape
Curved
AR Coating
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

5 specs
Caliber
Breitling 17 (ETA 2824-2 base)
8L45
Power Reserve
38h
72h
Jewels
0
35
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$5,700
$3,900
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