Which is cheaper, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition?

At MSRP the Gruppo Gamma Vanguard Steel Date is the cheaper of the two at $790, against $1,400 for the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition — a $610 gap before any retailer discounting.

Which is bigger, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition?

The Gruppo Gamma Vanguard Steel Date wears larger at 42mm versus 40mm for the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition — a 2mm difference across the dial.

Which has better water resistance, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition?

The Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition is rated to 300m versus 100m for the Gruppo Gamma Vanguard Steel Date.

Which has a longer power reserve, the Gruppo Gamma Vanguard Steel Date or the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition?

The Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition 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 Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition?

Both watches run automatic movements — the Gruppo Gamma Vanguard Steel Date uses the Miyota 9015 and the Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition uses the 6R55.

Side by side

Gruppo Gamma Vanguard Steel DatevsSeiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

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

Gruppo Gamma Vanguard Steel Date

ag-11

MSRP $790

Seiko Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition

spb545j1

MSRP $1,400

At a glance

15 of 29 specs differ

Diameter

Vanguard Steel Date42mm

Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition40mm

Power Reserve

Vanguard Steel Date42h

Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition72h

Water Resistance

Vanguard Steel Date100m

Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition300m

MSRP

Vanguard Steel Date$790

Prospex Sea Seiko Prospex 1965 Heritage Diver’s Watch Save the Ocean Limited Edition$1,400

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Yes

Anti-reflective coating on inner surface

Dial Color

Forged Carbon

Black

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

4 specs

Caliber

Miyota 9015

6R55

Power Reserve

42h

72h

Jewels

Complications

Date

None

Pricing

1 specs

MSRP

$790

$1,400

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