Which is cheaper, the Marnaut Dark Surge 300 or the Seiko Prospex Sea?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $595, against $1,390 for the Marnaut Dark Surge 300 — a $795 gap before any retailer discounting.

Which is bigger, the Marnaut Dark Surge 300 or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 41.7mm versus 41mm for the Marnaut Dark Surge 300 — a 0.7mm difference across the dial.

Which has better water resistance, the Marnaut Dark Surge 300 or the Seiko Prospex Sea?

The Marnaut Dark Surge 300 is rated to 300m versus 200m for the Seiko Prospex Sea.

What movement does the Marnaut Dark Surge 300 run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Marnaut Dark Surge 300 uses the Sellita SW200-1 and the Seiko Prospex Sea uses the 4R35.

Side by side

Marnaut Dark Surge 300vsSeiko Prospex Sea

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

Add a watch

Marnaut Dark Surge 300

MSRP $1,390

Seiko Prospex Sea

srpl11

MSRP $595

At a glance

11 of 29 specs differ

Diameter

Dark Surge 30041mm

Prospex Sea41.7mm

Power Reserve

Dark Surge 30041h

Prospex Sea41h

Water Resistance

Dark Surge 300300m

Prospex Sea200m

MSRP

Dark Surge 300$1,390

Prospex Sea$595

Full specifications

Case

5 specs

Crystal & Dial

3 specs

Crystal

Sapphire

Hardlex

Dial Color

Adriatic

Black

Lume

SuperLuminova C3

LumiBrite on hands, index(es) and bezel

Movement

2 specs

Caliber

Sellita SW200-1

4R35

Jewels

Pricing

1 specs

MSRP

—

$595

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Circula Watchesmicro

Follow this matchup

Get a note when Marnaut Dark Surge 300 vs Seiko Prospex Sea gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Circula Watches DiveSportvsSeiko Prospex Sea Circula Watches SuperSportvsSeiko Prospex Sea Pompeak Sub-AquaticvsSeiko Prospex Sea Boldr Expedition IIvsSeiko Prospex Sea Marnaut Dark Surge 300vsBorealis Watch Co. Jamanta Dryden PathfindervsMarnaut Dark Surge 300

Edit this comparison Add another watch Explore more 40–43mm watches

Marnaut Dark Surge 300vsSeiko Prospex Sea

At a glance

Full specifications

More watches worth a look

DiveSport

Jamanta

SuperSport

Pathfinder

Sub-Aquatic

Blacktip 41

Expedition II

Porto Covo

Follow this matchup

People also compared