Which is cheaper, the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition or the Straton Syncro MKII Mechanical Chrono?

At MSRP the Straton Syncro MKII Mechanical Chrono is the cheaper of the two at $599, against $1,350 for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a $751 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition or the Straton Syncro MKII Mechanical Chrono?

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition wears larger at 42.7mm versus 40mm for the Straton Syncro MKII Mechanical Chrono — a 2.7mm difference across the dial.

What movement does the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition run compared to the Straton Syncro MKII Mechanical Chrono?

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition runs a automatic caliber (6R35), while the Straton Syncro MKII Mechanical Chrono runs a manual (Seagull ST19).

Side by side

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special EditionvsStraton Straton Syncro MKII Mechanical Chrono

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

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

spb301j1

MSRP $1,350

Straton Straton Syncro MKII Mechanical Chrono

straton-syncro-mkii-mechanical-chrono

MSRP $599

At a glance

19 of 29 specs differ

Diameter

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition42.7mm

Straton Syncro MKII Mechanical Chrono40mm

Power Reserve

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition70h

Straton Syncro MKII Mechanical Chrono—

Water Resistance

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition200m

Straton Syncro MKII Mechanical Chrono100m

MSRP

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition$1,350

Straton Syncro MKII Mechanical Chrono$599

Full specifications

Case

8 specs

Crystal & Dial

5 specs

Crystal Shape

Curved

Domed

AR Coating

Anti-reflective coating on inner surface

Underside

Dial Color

Black

—

Indices

Applied

—

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

5 specs

Caliber

6R35

Seagull ST19

Type

Automatic

Manual

Beat Rate

28,800 vph

0 vph

Power Reserve

70h

Jewels

Pricing

1 specs

MSRP

$1,350

$599

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