Side by side

Breitling Superocean Heritage B20 AutomaticvsSeiko Prospex Sea 1968 Heritage Diver's GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Superocean Heritage B20 Automatic
BreitlingSuperocean Heritage B20 Automatic
MSRP $5,800
Prospex Sea 1968 Heritage Diver's GMT
SeikoProspex Sea 1968 Heritage Diver's GMT
MSRP $1,500
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 1968 Heritage Diver's GMT

The Seiko Prospex Sea 1968 Heritage Diver's GMT is widely praised for its build quality, finishing, and comfortable wearability, offering good value for its price point. Owners and reviewers highlight the attractive silver/white sunray dial, blue ceramic bezel, and the premium feel of the improved bracelet clasp with excellent micro-adjustment. The Caliber 6R54 movement provides a 72-hour power reserve, and real-world accuracy often exceeds its stated range of +25 to -15 seconds per day, with some owners reporting figures around +3 to +5 seconds per day. However, the caller-style GMT functionality is a point of contention for some, who find the GMT scale difficult to read and prefer a flyer GMT at this price. Some also find the crown position at 4 o'clock undesirable, and a few note a lack of dial contrast or illegibility of the inner bezel.

At a glance

14 of 29 specs differ
Diameter
Superocean Heritage B20 Automatic42mm
Prospex Sea 1968 Heritage Diver's GMT42mm
Power Reserve
Superocean Heritage B20 Automatic70h
Prospex Sea 1968 Heritage Diver's GMT72h
Water Resistance
Superocean Heritage B20 Automatic200m
Prospex Sea 1968 Heritage Diver's GMT200m
MSRP
Superocean Heritage B20 Automatic$5,800
Prospex Sea 1968 Heritage Diver's GMT$1,500

Full specifications

Case

4 specs
Thickness
14.35mm
12.9mm
Lug-to-Lug
48.6mm
Finish
Stainless steel
Brushed and polished
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)
6R54
Beat Rate
0 vph
28,800 vph
Power Reserve
70h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$5,800
$1,500
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