Which is cheaper, the Seiko Prospex Sea or the Timefactors PRS-30?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $625, against $1,013 for the Timefactors PRS-30 — a $388 gap before any retailer discounting.

Which is bigger, the Seiko Prospex Sea or the Timefactors PRS-30?

The Seiko Prospex Sea wears larger at 43.8mm versus 42mm for the Timefactors PRS-30 — a 1.8mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea or the Timefactors PRS-30?

The Seiko Prospex Sea is rated to 200m versus 100m for the Timefactors PRS-30.

What movement does the Seiko Prospex Sea run compared to the Timefactors PRS-30?

Both watches run automatic movements — the Seiko Prospex Sea uses the 4R35 and the Timefactors PRS-30 uses the ETA 2824-2.

Side by side

Seiko Prospex SeavsTimefactors PRS-30

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

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Seiko Prospex Sea

srpe37

MSRP $625

Timefactors PRS-30

precista-bronze-prs-30

MSRP $1,013

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At a glance

14 of 29 specs differ

Diameter

Prospex Sea43.8mm

PRS-3042mm

Power Reserve

Prospex Sea41h

PRS-30—

Water Resistance

Prospex Sea200m

PRS-30100m

MSRP

Prospex Sea$625

PRS-30$1,013

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

Anti-reflective coating on inner surface

Inner

Dial Color

Black

Dark Brown

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

4R35

ETA 2824-2

Power Reserve

41h

—

Jewels

Pricing

1 specs

MSRP

$625

$1,013

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Seiko Prospex SeavsTimefactors PRS-30

At a glance

Full specifications

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