Which is cheaper, the Bohen Grande Marine or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

At MSRP the Bohen Grande Marine is the cheaper of the two at $2,430, against $3,300 for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition — a $870 gap before any retailer discounting.

Which is bigger, the Bohen Grande Marine or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition wears larger at 44mm versus 41mm for the Bohen Grande Marine — a 3mm difference across the dial.

Which has better water resistance, the Bohen Grande Marine or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Bohen Grande Marine is rated to 600m versus 200m for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition.

Which has a longer power reserve, the Bohen Grande Marine or the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition carries a 50-hour power reserve against 42 hours on the Bohen Grande Marine.

What movement does the Bohen Grande Marine run compared to the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition?

Both watches run automatic movements — the Bohen Grande Marine uses the Soprod and the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition uses the 8L35.

Side by side

Bohen Grande MarinevsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

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Bohen Grande Marine

MSRP $2,430

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

sla061j1

MSRP $3,300

At a glance

14 of 29 specs differ

Diameter

Grande Marine41mm

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm

Power Reserve

Grande Marine42h

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h

Water Resistance

Grande Marine600m

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m

MSRP

Grande Marine$2,430

Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Black/Grey Gradient

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Soprod

8L35

Power Reserve

42h

50h

Jewels

Pricing

1 specs

MSRP

—

$3,300

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Bohen Grande MarinevsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

At a glance

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