Which is cheaper, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Land Mechanical?

At MSRP the Gruppo Gamma Vanguard Steel Date is the cheaper of the two at $790, against $995 for the Seiko Prospex Land Mechanical — a $205 gap before any retailer discounting.

Which is bigger, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Land Mechanical?

The Gruppo Gamma Vanguard Steel Date wears larger at 42mm versus 39.5mm for the Seiko Prospex Land Mechanical — a 2.5mm difference across the dial.

Which has better water resistance, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Land Mechanical?

The Gruppo Gamma Vanguard Steel Date is rated to 100m versus 20m for the Seiko Prospex Land Mechanical.

Which has a longer power reserve, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Land Mechanical?

The Seiko Prospex Land Mechanical carries a 72-hour power reserve against 42 hours on the Gruppo Gamma Vanguard Steel Date.

What movement does the Gruppo Gamma Vanguard Steel Date run compared to the Seiko Prospex Land Mechanical?

Both watches run automatic movements — the Gruppo Gamma Vanguard Steel Date uses the Miyota 9015 and the Seiko Prospex Land Mechanical uses the 6R55.

Side by side

Gruppo Gamma Vanguard Steel DatevsSeiko Prospex Land Mechanical

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

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Gruppo Gamma Vanguard Steel Date

MSRP $790

See the full Vanguard Steel Date

Seiko Prospex Land Mechanical

MSRP $995

See the full Prospex Land Mechanical

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At a glance

14 of 29 specs differ

Diameter

Vanguard Steel Date42mm

Prospex Land Mechanical39.5mm

Power Reserve

Vanguard Steel Date42h

Prospex Land Mechanical72h

Water Resistance

Vanguard Steel Date100m

Prospex Land Mechanical200m

MSRP

Vanguard Steel Date$790

Prospex Land Mechanical$995

Full specifications

Case

6 specs

Crystal & Dial

3 specs

AR Coating

Yes

Anti-reflective coating on inner surface

Dial Color

Forged Carbon

—

Lume

Super-LumiNova

LumiBrite on hands and index(es)

Movement

4 specs

Caliber

Miyota 9015

6R55

Power Reserve

42h

72h

Jewels

Complications

Date

None

Pricing

1 specs

MSRP

$790

$995

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Gruppo Gamma Vanguard Steel DatevsSeiko Prospex Land Mechanical

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