Which is cheaper, the Borealis Watch Co. Lusitano or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

At MSRP the Borealis Watch Co. Lusitano is the cheaper of the two at $350, against $1,350 for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a $1,000 gap before any retailer discounting.

Which is bigger, the Borealis Watch Co. Lusitano or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition wears larger at 42.7mm versus 39mm for the Borealis Watch Co. Lusitano — a 3.7mm difference across the dial.

Which has better water resistance, the Borealis Watch Co. Lusitano or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition is rated to 200m versus 100m for the Borealis Watch Co. Lusitano.

Which has a longer power reserve, the Borealis Watch Co. Lusitano or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition carries a 70-hour power reserve against 60 hours on the Borealis Watch Co. Lusitano.

What movement does the Borealis Watch Co. Lusitano run compared to the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

Both watches run automatic movements — the Borealis Watch Co. Lusitano uses the Miyota 8315 and the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition uses the 6R35.

Side by side

Borealis Watch Co. LusitanovsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

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

Borealis Watch Co.Lusitano

borealis-lusitano-black-dial-a-chronicle-of-time-elegance-and-precision

MSRP $350

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

spb301j1

MSRP $1,350

At a glance

12 of 29 specs differ

Diameter

Lusitano39mm

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition42.7mm

Power Reserve

Lusitano60h

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition70h

Water Resistance

Lusitano100m

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition200m

MSRP

Lusitano$350

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition$1,350

Full specifications

Case

5 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

Yes

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 8315

6R35

Power Reserve

60h

70h

Jewels

Pricing

1 specs

MSRP

$350

$1,350

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