Which is cheaper, the S.U.F Helsinki 180 Protox or the Seiko Prospex Sea?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $900, against $2,588 for the S.U.F Helsinki 180 Protox — a $1,688 gap before any retailer discounting.

Which is bigger, the S.U.F Helsinki 180 Protox or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 41mm versus 38.7mm for the S.U.F Helsinki 180 Protox — a 2.3mm difference across the dial.

Which has better water resistance, the S.U.F Helsinki 180 Protox or the Seiko Prospex Sea?

The Seiko Prospex Sea is rated to 200m versus 100m for the S.U.F Helsinki 180 Protox.

Which has a longer power reserve, the S.U.F Helsinki 180 Protox or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 70-hour power reserve against 42 hours on the S.U.F Helsinki 180 Protox.

What movement does the S.U.F Helsinki 180 Protox run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the S.U.F Helsinki 180 Protox uses the Soprod A10 and the Seiko Prospex Sea uses the 6R35.

Side by side

S.U.F Helsinki 180 ProtoxvsSeiko Prospex Sea

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

Add a watch

S.U.F Helsinki 180 Protox

180-protox

MSRP $2,588

Seiko Prospex Sea

spb317j1

MSRP $900

Buy from S.U.F Helsinki ↗

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Buy from Seiko ↗

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At a glance

13 of 29 specs differ

Diameter

180 Protox38.7mm

Prospex Sea41mm

Power Reserve

180 Protox42h

Prospex Sea70h

Water Resistance

180 Protox100m

Prospex Sea200m

MSRP

180 Protox$2,588

Prospex Sea$900

Full specifications

Case

6 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Soprod A10

6R35

Power Reserve

42h

70h

Jewels

Pricing

1 specs

MSRP

—

$900

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S.U.F Helsinki 180 ProtoxvsSeiko Prospex Sea

At a glance

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