Which is cheaper, the Seiko Prospex Sea 1968 Heritage Diver's GMT or the Typsim 100M?

At MSRP the Typsim 100M is the cheaper of the two at $999, against $1,500 for the Seiko Prospex Sea 1968 Heritage Diver's GMT — a $501 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea 1968 Heritage Diver's GMT or the Typsim 100M?

The Seiko Prospex Sea 1968 Heritage Diver's GMT wears larger at 42mm versus 36mm for the Typsim 100M — a 6mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea 1968 Heritage Diver's GMT or the Typsim 100M?

The Seiko Prospex Sea 1968 Heritage Diver's GMT is rated to 200m versus 100m for the Typsim 100M.

Which has a longer power reserve, the Seiko Prospex Sea 1968 Heritage Diver's GMT or the Typsim 100M?

The Seiko Prospex Sea 1968 Heritage Diver's GMT carries a 72-hour power reserve against 40 hours on the Typsim 100M.

What movement does the Seiko Prospex Sea 1968 Heritage Diver's GMT run compared to the Typsim 100M?

Both watches run automatic movements — the Seiko Prospex Sea 1968 Heritage Diver's GMT uses the 6R54 and the Typsim 100M uses the Sellita SW300-1.

Side by side

Seiko Prospex Sea 1968 Heritage Diver's GMTvsTypsim 100M

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

Add a watch

Seiko Prospex Sea 1968 Heritage Diver's GMT

spb381j1

MSRP $1,500

Typsim 100M

100m

MSRP $999

At a glance

14 of 29 specs differ

Diameter

Prospex Sea 1968 Heritage Diver's GMT42mm

100M36mm

Power Reserve

Prospex Sea 1968 Heritage Diver's GMT72h

100M40h

Water Resistance

Prospex Sea 1968 Heritage Diver's GMT200m

100M100m

MSRP

Prospex Sea 1968 Heritage Diver's GMT$1,500

100M$999

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal

Sapphire

Acrylic

AR Coating

Anti-reflective coating on inner surface

Inner

Dial Color

Black

Black Gilt

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

6R54

Sellita SW300-1

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

$1,500

$999

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