Side by side

Héron Watches MarinorvsSeiko Prospex Sea

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

Add a watch
Marinor
Héron WatchesMarinor
MSRP $620
See the full Marinor
Prospex Sea
SeikoProspex Sea
MSRP $1,100
See the full Prospex Sea
Buy from Héron Watches ↗
Buy used on eBay ↗
Buy from Seiko ↗
Buy used on eBay ↗

Some links are affiliate links — lug2lug may earn a commission at no extra cost to you. Disclosures

At a glance

11 of 29 specs differ
Diameter
Marinor39mm
Prospex Sea41.3mm
Power Reserve
Marinor—
Prospex Sea72h
Water Resistance
Marinor300m
Prospex Sea300m
MSRP
Marinor$620
Prospex Sea$1,100

Full specifications

Case

5 specs
Category
—
Diver
Diameter
39mm
41.3mm
Thickness
12.9mm
12.5mm
Lug-to-Lug
0mm
48.2mm
Lug Width
0mm
20mm

Crystal & Dial

2 specs
AR Coating
—
Anti-reflective coating on inner surface
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Miyota 9039
Seiko 6R55
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$620
$1,100
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.

BOLDR Supply Co. Odyssey Luminaire Aetherfire
BOLDR Supply Co.micro

Odyssey Luminaire Aetherfire

3 variantsSeries
40mm·Automatic·300m WR
$599MSRP
—Used
Borealis Watch Co. Estoril 300 GMT
Borealis Watch Co.micro

Estoril 300 GMT

14 variantsEstoril 300 GMT
41.5mm·Automatic·300m WR
$600MSRP
—Used
Mark Time Watches M 4
Mark Time Watchesmicro

M 4

39mm·Automatic·300m WR
—MSRP
—Used
Borealis Watch Co. Porto Covo
Borealis Watch Co.micro

Porto Covo

2 variantsPorto Covo
40mm·Automatic·300m WR
$415MSRP
—Used
Alcadus Watches Dromo - Black - Alcadus Watches
Alcadus Watchesmicro

Dromo - Black - Alcadus Watches

6 variantsSeries
39mm·Automatic·200m WR
$697MSRP
—Used
Dryden Pathfinder
Drydenmicro

Pathfinder

9 variantsPathfinder
41mm·Automatic·201m WR
$650MSRP
—Used
Pook Watches Slava Ukraini
Pook Watchesmicro

Slava Ukraini

38.5mm·Automatic·200m WR
$500MSRP
—Used
CWC RN81 Clearance Diver Automatic Watch
CWCmicro
RN Divers

RN81 Clearance Diver Automatic Watch

2 variantsRN81 Clearance Diver Automatic Watch
41mm·Automatic·300m WR
$1,875MSRP
—Used
All alternatives to the Marinor →All alternatives to the Prospex Sea →
Explore the full catalog
DiscussionNot started
Adjacent matchups

People also compared

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

Héron Watches MarinorvsSeiko Prospex SeaBeaucroft Watches ElementvsSeiko Prospex SeaMarloe Watch Company Morar 310vsSeiko Prospex SeaVenezianico Nereide Tungsteno 39vsSeiko Prospex SeaDryden PathfindervsHéron Watches MarinorBorealis Watch Co. Caloura 300mvsHéron Watches Marinor
Edit this comparisonAdd another watchExplore more 38–43mm watches