Which is cheaper, the Squale 1521 or the Seiko Prospex Sea?

At MSRP the Seiko Prospex Sea is the cheaper of the two at $595, against $1,265 for the Squale 1521 — a $670 gap before any retailer discounting.

Which is bigger, the Squale 1521 or the Seiko Prospex Sea?

The Squale 1521 wears larger at 42mm versus 41.7mm for the Seiko Prospex Sea — a 0.3mm difference across the dial.

Which has better water resistance, the Squale 1521 or the Seiko Prospex Sea?

The Squale 1521 is rated to 500m versus 200m for the Seiko Prospex Sea.

Which has a longer power reserve, the Squale 1521 or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 41-hour power reserve against 38 hours on the Squale 1521.

What movement does the Squale 1521 run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Squale 1521 uses the Sellita SW200-1 and the Seiko Prospex Sea uses the Seiko 4R35.

Side by side

Squale 1521vsSeiko Prospex Sea

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

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Squale 1521

1521-classic-leather

MSRP $1,265

See the full 1521

Seiko Prospex Sea

MSRP $595

See the full Prospex Sea

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At a glance

12 of 29 specs differ

Diameter

152142mm

Prospex Sea41.7mm

Power Reserve

152138h

Prospex Sea41h

Water Resistance

1521500m

Prospex Sea200m

MSRP

1521$1,265

Prospex Sea$595

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Hardlex

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW200-1

Seiko 4R35

Power Reserve

38h

41h

Jewels

Pricing

1 specs

MSRP

$1,265

$595

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Squale 1521vsSeiko Prospex Sea

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