Which is cheaper, the Seiko Prospex Sea or the Squale Master?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $1,100, against $2,785 for the Squale Master — a $1,685 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea or the Squale Master?

The Squale Master wears larger at 42mm versus 41.3mm for the Seiko Prospex Sea — a 0.7mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea or the Squale Master?

The Squale Master is rated to 1200m versus 300m for the Seiko Prospex Sea.

Which has a longer power reserve, the Seiko Prospex Sea or the Squale Master?

The Seiko Prospex Sea carries a 72-hour power reserve against 38 hours on the Squale Master.

What movement does the Seiko Prospex Sea run compared to the Squale Master?

Both watches run automatic movements — the Seiko Prospex Sea uses the Seiko 6R55 and the Squale Master uses the Sellita SW200-1.

Side by side

Seiko Prospex SeavsSquale Master

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

Add a watch

Seiko Prospex Sea

MSRP $1,100

See the full Prospex Sea

Squale Master

master-titanium

MSRP $2,785

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

At a glance

12 of 29 specs differ

Diameter

Prospex Sea41.3mm

Master42mm

Power Reserve

Prospex Sea72h

Master38h

Water Resistance

Prospex Sea300m

Master1,200m

MSRP

Prospex Sea$1,100

Master$2,785

Full specifications

Case

6 specs

Crystal & Dial

2 specs

AR Coating

Anti-reflective coating on inner surface

—

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

Seiko 6R55

Sellita SW200-1

Power Reserve

72h

38h

Jewels

Pricing

1 specs

MSRP

$1,100

$2,785

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.

Borealis Watch Co.micro

DiscussionNot started

Adjacent matchups

People also compared

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

Dryden PathfindervsSquale Master Borealis Watch Co. Caloura 300mvsSquale Master Squale MastervsZelos Swordfish 3 Spinnaker Croft PioneervsSquale Master Seiko Prospex SeavsSquale Master x Palombari Comsubin CWC RN81 Clearance Diver Automatic WatchvsSeiko Prospex Sea

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

Seiko Prospex SeavsSquale Master

At a glance

Full specifications

More watches worth a look

Estoril 300 GMT

Taucheruhren von CiRCULA

Porto Covo

C-02 Tactik Graphite

Pathfinder

C-02 Tactik Marine

RN81 Clearance Diver Automatic Watch

Tesei Bronze Swiss

People also compared