Which is cheaper, the Meia Lua Callisto or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

At MSRP the Meia Lua Callisto is the cheaper of the two at $661, against $1,250 for the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition — a $589 gap before any retailer discounting.

Which is bigger, the Meia Lua Callisto or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

The Meia Lua Callisto wears larger at 42mm versus 40.5mm for the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition — a 1.5mm difference across the dial.

Which has better water resistance, the Meia Lua Callisto or the Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1965 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 1965 Heritage Diver's Save the Ocean Special Edition?

The Seiko Prospex Sea 1965 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 1965 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 1965 Heritage Diver's Save the Ocean Special Edition uses the Seiko 6R35.

Side by side

Meia Lua CallistovsSeiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

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

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Meia Lua Callisto

MSRP $661

See the full Callisto

Seiko Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

MSRP $1,250

See the full Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition

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At a glance

14 of 29 specs differ

Diameter

Callisto42mm

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition40.5mm

Power Reserve

Callisto40h

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition70h

Water Resistance

Callisto100m

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition200m

MSRP

Callisto$661

Prospex Sea 1965 Heritage Diver's Save the Ocean Special Edition$1,250

Full specifications

Case

6 specs

Crystal & Dial

4 specs

Crystal Shape

—

Curved

AR Coating

—

Anti-reflective coating on inner surface

Dial Color

—

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 9122

Seiko 6R35

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$661

$1,250

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