Which is cheaper, the Seiko Prospex Sea or the Vaer D4 Outerknown Solar Diver?

At MSRP the Vaer D4 Outerknown Solar Diver is the cheaper of the two at $549, against $900 for the Seiko Prospex Sea — a $351 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea or the Vaer D4 Outerknown Solar Diver?

The Seiko Prospex Sea wears larger at 41mm versus 39mm for the Vaer D4 Outerknown Solar Diver — a 2mm difference across the dial.

Which has a longer power reserve, the Seiko Prospex Sea or the Vaer D4 Outerknown Solar Diver?

The Seiko Prospex Sea carries a 70-hour power reserve against 40 hours on the Vaer D4 Outerknown Solar Diver.

What movement does the Seiko Prospex Sea run compared to the Vaer D4 Outerknown Solar Diver?

The Seiko Prospex Sea runs a automatic caliber (6R35), while the Vaer D4 Outerknown Solar Diver runs a quartz.

Side by side

Seiko Prospex SeavsVaer D4 Outerknown Solar Diver

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

Seiko Prospex Sea

spb317j1

MSRP $900

Vaer D4 Outerknown Solar Diver

d4-outerknown-usa-solar-diver-marine

MSRP $549

At a glance

14 of 29 specs differ

Diameter

Prospex Sea41mm

D4 Outerknown Solar Diver39mm

Power Reserve

Prospex Sea70h

D4 Outerknown Solar Diver40h

Water Resistance

Prospex Sea200m

D4 Outerknown Solar Diver200m

MSRP

Prospex Sea$900

D4 Outerknown Solar Diver$549

Full specifications

Case

4 specs

Diameter

41mm

39mm

Thickness

12.3mm

13.18mm

Lug-to-Lug

46.9mm

46mm

Material

Stainless Steel

316L Stainless Steel

Crystal & Dial

5 specs

Crystal

Sapphire

Domed Sapphire

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Dial Color

Black

Blue

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

4 specs

Caliber

6R35

—

Type

Automatic

Quartz

Power Reserve

70h

40h

Jewels

Pricing

1 specs

MSRP

$900

$549

Follow this matchup

Get a note when Seiko Prospex Sea vs Vaer D4 Outerknown Solar Diver gets more votes, a community discussion, or a price drop. No account needed.

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

Adjacent matchups

People also compared

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

Borealis Watch Co. Porto CovovsVaer D4 Outerknown Solar Diver Baltic Aquascaphe TitaniumvsVaer D4 Outerknown Solar Diver Boldr Odyssey 40mmvsVaer D4 Outerknown Solar Diver Boldr The T Rex By Boldr X NitecorevsVaer D4 Outerknown Solar Diver Seiko Prospex SeavsYema Navygraf Marine Nationale Quartz Islander Saltaire 38mm Solar Dive Watch with Ink Black Dial #ISL-278vsSeiko Prospex Sea

Edit this comparison Add another watch More diver comparisons Best Diver Watches Under $1,000 Explore more 38–42mm watches

Seiko Prospex SeavsVaer D4 Outerknown Solar Diver

At a glance

Full specifications

Follow this matchup

More watches worth a look

Porto Covo

Navygraf Marine Nationale Quartz

Aquascaphe Titanium

Islander Saltaire 38mm Solar Dive Watch with Ink Black Dial #ISL-278

Odyssey 40mm

RANCD Quartz Divers Watch with Personalised Case Back

The T Rex By Boldr X Nitecore

DS4 Topo Designs x Worn & Wound Solar Hiker

People also compared