Which is cheaper, the Gruppo Gamma Vanguard Weathered Date or the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch?

At MSRP the Gruppo Gamma Vanguard Weathered Date is the cheaper of the two at $790, against $1,700 for the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch — a $910 gap before any retailer discounting.

Which has better water resistance, the Gruppo Gamma Vanguard Weathered Date or the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch?

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch is rated to 300m versus 100m for the Gruppo Gamma Vanguard Weathered Date.

Which has a longer power reserve, the Gruppo Gamma Vanguard Weathered Date or the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch?

The Seiko Prospex Sea 1968 Heritage Diver's GMT Watch carries a 72-hour power reserve against 42 hours on the Gruppo Gamma Vanguard Weathered Date.

What movement does the Gruppo Gamma Vanguard Weathered Date run compared to the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch?

Both watches run automatic movements — the Gruppo Gamma Vanguard Weathered Date uses the Miyota 9015 and the Seiko Prospex Sea 1968 Heritage Diver's GMT Watch uses the 6R54.

Side by side

Gruppo Gamma Vanguard Weathered DatevsSeiko Prospex Sea 1968 Heritage Diver's GMT Watch

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

Gruppo Gamma Vanguard Weathered Date

av-11

MSRP $790

Seiko Prospex Sea 1968 Heritage Diver's GMT Watch

spb519j1

MSRP $1,700

At a glance

14 of 29 specs differ

Diameter

Vanguard Weathered Date42mm

Prospex Sea 1968 Heritage Diver's GMT Watch42mm

Power Reserve

Vanguard Weathered Date42h

Prospex Sea 1968 Heritage Diver's GMT Watch72h

Water Resistance

Vanguard Weathered Date100m

Prospex Sea 1968 Heritage Diver's GMT Watch300m

MSRP

Vanguard Weathered Date$790

Prospex Sea 1968 Heritage Diver's GMT Watch$1,700

Full specifications

Case

6 specs

Crystal & Dial

3 specs

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

6R54

Power Reserve

42h

72h

Jewels

Complications

Date

None

Pricing

1 specs

MSRP

$790

$1,700

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