Which is cheaper, the Alexander Shorokhoff Big Date Chrono or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

At MSRP the Seiko Prospex SPEEDTIMER Mechanical Chronograph is the cheaper of the two at $2,500, against $3,025 for the Alexander Shorokhoff Big Date Chrono — a $525 gap before any retailer discounting.

Which is bigger, the Alexander Shorokhoff Big Date Chrono or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Alexander Shorokhoff Big Date Chrono wears larger at 43.5mm versus 42mm for the Seiko Prospex SPEEDTIMER Mechanical Chronograph — a 1.5mm difference across the dial.

Which has better water resistance, the Alexander Shorokhoff Big Date Chrono or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Alexander Shorokhoff Big Date Chrono is rated to 100m versus 10m for the Seiko Prospex SPEEDTIMER Mechanical Chronograph.

Which has a longer power reserve, the Alexander Shorokhoff Big Date Chrono or the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

The Seiko Prospex SPEEDTIMER Mechanical Chronograph carries a 45-hour power reserve against 42 hours on the Alexander Shorokhoff Big Date Chrono.

What movement does the Alexander Shorokhoff Big Date Chrono run compared to the Seiko Prospex SPEEDTIMER Mechanical Chronograph?

Both watches run automatic movements — the Alexander Shorokhoff Big Date Chrono uses the DD4500 and the Seiko Prospex SPEEDTIMER Mechanical Chronograph uses the 8R48.

Side by side

Alexander Shorokhoff Big Date ChronovsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

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Alexander Shorokhoff Big Date Chrono

MSRP $3,025

See the full Big Date Chrono

Seiko Prospex SPEEDTIMER Mechanical Chronograph

MSRP $2,500

See the full Prospex SPEEDTIMER Mechanical Chronograph

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At a glance

14 of 29 specs differ

Diameter

Big Date Chrono43.5mm

Prospex SPEEDTIMER Mechanical Chronograph42mm

Power Reserve

Big Date Chrono42h

Prospex SPEEDTIMER Mechanical Chronograph45h

Water Resistance

Big Date Chrono100m

Prospex SPEEDTIMER Mechanical Chronograph100m

MSRP

Big Date Chrono$3,025

Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

—

Curved

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

—

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

DD4500

8R48

Power Reserve

42h

45h

Jewels

Pricing

1 specs

MSRP

$3,025

$2,500

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