Which is cheaper, the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited 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 $2,500 for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition — a $1,901 gap before any retailer discounting.

Which is bigger, the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition or the Straton Syncro MKII Mechanical Chrono?

The Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition wears larger at 42mm versus 40mm for the Straton Syncro MKII Mechanical Chrono — a 2mm difference across the dial.

What movement does the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition run compared to the Straton Syncro MKII Mechanical Chrono?

The Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition runs a automatic caliber (8R48), while the Straton Syncro MKII Mechanical Chrono runs a manual (Seagull ST19).

Side by side

Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited EditionvsStraton Straton Syncro MKII Mechanical Chrono

Q: Which has better water resistance, the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition or the Straton Syncro MKII Mechanical Chrono?

The Straton Syncro MKII Mechanical Chrono is rated to 100m versus 10m for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition.

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

Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

srq059j1

MSRP $2,500

Straton Straton Syncro MKII Mechanical Chrono

straton-syncro-mkii-mechanical-chrono

MSRP $599

At a glance

17 of 29 specs differ

Diameter

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm

Straton Syncro MKII Mechanical Chrono40mm

Power Reserve

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h

Straton Syncro MKII Mechanical Chrono—

Water Resistance

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m

Straton Syncro MKII Mechanical Chrono100m

MSRP

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Straton Syncro MKII Mechanical Chrono$599

Full specifications

Case

6 specs

Diameter

42mm

40mm

Thickness

14.6mm

12.4mm

Lug-to-Lug

49.5mm

48mm

Material

Stainless Steel

316L Stainless Steel

Finish

Brushed and polished

—

Caseback

Solid

Sapphire crystal

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 and index(es)

None

Movement

5 specs

Caliber

8R48

Seagull ST19

Type

Automatic

Manual

Beat Rate

28,800 vph

0 vph

Power Reserve

45h

Jewels

Pricing

1 specs

MSRP

$2,500

$599

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