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Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited EditionvsSquale 1521

Q: Which is cheaper, the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition or the Squale 1521?

At MSRP the Squale 1521 is the cheaper of the two at $1,265, against $3,300 for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition — a $2,035 gap before any retailer discounting.

Q: Which is bigger, the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition or the Squale 1521?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition wears larger at 44mm versus 42mm for the Squale 1521 — a 2mm difference across the dial.

Q: Which has better water resistance, the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition or the Squale 1521?

The Squale 1521 is rated to 500m versus 200m for the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition.

Q: Which has a longer power reserve, the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition or the Squale 1521?

The Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition carries a 50-hour power reserve against 38 hours on the Squale 1521.

Q: What movement does the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition run compared to the Squale 1521?

Both watches run automatic movements — the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition uses the Seiko 8L35 and the Squale 1521 uses the Sellita SW200-1.

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited EditionvsSquale 1521

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