Which is cheaper, the Bohen Grande Marine or the Seiko Prospex Sea?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $900, against $2,430 for the Bohen Grande Marine — a $1,530 gap before any retailer discounting.

Which has better water resistance, the Bohen Grande Marine or the Seiko Prospex Sea?

The Bohen Grande Marine is rated to 600m versus 200m for the Seiko Prospex Sea.

Which has a longer power reserve, the Bohen Grande Marine or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 70-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?

Both watches run automatic movements — the Bohen Grande Marine uses the Soprod and the Seiko Prospex Sea uses the 6R35.

Side by side

Bohen Grande MarinevsSeiko Prospex Sea

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

spb317j1

MSRP $900

At a glance

13 of 29 specs differ

Diameter

Grande Marine41mm

Prospex Sea41mm

Power Reserve

Grande Marine42h

Prospex Sea70h

Water Resistance

Grande Marine600m

Prospex Sea200m

MSRP

Grande Marine$2,430

Prospex Sea$900

Full specifications

Case

5 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

6R35

Power Reserve

42h

70h

Jewels

Pricing

1 specs

MSRP

—

$900

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Bohen Grande MarinevsSeiko Prospex Sea

At a glance

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