Which is cheaper, the Meia Lua Callisto or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

At MSRP the Meia Lua Callisto is the cheaper of the two at $661, against $1,350 for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a $689 gap before any retailer discounting.

Which is bigger, the Meia Lua Callisto 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 42mm for the Meia Lua Callisto — a 0.7mm difference across the dial.

Which has better water resistance, the Meia Lua Callisto 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 Meia Lua Callisto.

Which has a longer power reserve, the Meia Lua Callisto 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 40 hours on the Meia Lua Callisto.

What movement does the Meia Lua Callisto run compared to the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

Both watches run automatic movements — the Meia Lua Callisto uses the Miyota 9122 and the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition uses the Seiko 6R35.

Meia Lua CallistovsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

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