Which is cheaper, the Straton Syncro MKII Mechanical Chrono or the Seiko Prospex Sea?

At MSRP the Straton Syncro MKII Mechanical Chrono is the cheaper of the two at $599, against $795 for the Seiko Prospex Sea — a $196 gap before any retailer discounting.

Which is bigger, the Straton Syncro MKII Mechanical Chrono or the Seiko Prospex Sea?

The Straton Syncro MKII Mechanical Chrono wears larger at 40mm versus 34mm for the Seiko Prospex Sea — a 6mm difference across the dial.

Which has better water resistance, the Straton Syncro MKII Mechanical Chrono or the Seiko Prospex Sea?

The Straton Syncro MKII Mechanical Chrono is rated to 100m versus 20m for the Seiko Prospex Sea.

What movement does the Straton Syncro MKII Mechanical Chrono run compared to the Seiko Prospex Sea?

The Straton Syncro MKII Mechanical Chrono runs a manual caliber (Seagull ST19), while the Seiko Prospex Sea runs a quartz (6N01).

Side by side

Straton Straton Syncro MKII Mechanical ChronovsSeiko Prospex Sea

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

Straton Straton Syncro MKII Mechanical Chrono

straton-syncro-mkii-mechanical-chrono

MSRP $599

Seiko Prospex Sea

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MSRP $795

At a glance

20 of 29 specs differ

Diameter

Straton Syncro MKII Mechanical Chrono40mm

Prospex Sea34mm

Power Reserve

Straton Syncro MKII Mechanical Chrono—

Prospex Sea40h

Water Resistance

Straton Syncro MKII Mechanical Chrono100m

Prospex Sea200m

MSRP

Straton Syncro MKII Mechanical Chrono$599

Prospex Sea$795

Full specifications

Case

9 specs

Crystal & Dial

5 specs

Crystal Shape

Domed

Flat

AR Coating

Underside

Anti-reflective coating on inner surface

Dial Color

—

Black

Indices

—

Applied

Lume

None

LumiBrite on hands and index(es)

Movement

5 specs

Caliber

Seagull ST19

6N01

Type

Manual

Quartz

Beat Rate

0 vph

28,800 vph

Power Reserve

40h

Jewels

Pricing

1 specs

MSRP

$599

$795

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