Which is cheaper, the Praesidus A-11 SAIT or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

At MSRP the Praesidus A-11 SAIT is the cheaper of the two at $300, against $1,350 for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a $1,050 gap before any retailer discounting.

Which is bigger, the Praesidus A-11 SAIT 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 38mm for the Praesidus A-11 SAIT — a 4.7mm difference across the dial.

Which has better water resistance, the Praesidus A-11 SAIT 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 Praesidus A-11 SAIT.

Which has a longer power reserve, the Praesidus A-11 SAIT 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 Praesidus A-11 SAIT.

What movement does the Praesidus A-11 SAIT run compared to the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

Both watches run automatic movements — the Praesidus A-11 SAIT uses the Seiko NH35 and the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition uses the 6R35.

Side by side

Praesidus A-11 SAITvsSeiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

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

Praesidus A-11 SAIT

P-38-SA-MB-SDCSG

MSRP $300

Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition

spb301j1

MSRP $1,350

At a glance

15 of 29 specs differ

Diameter

A-11 SAIT38mm

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition42.7mm

Power Reserve

A-11 SAIT40h

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition70h

Water Resistance

A-11 SAIT100m

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition200m

MSRP

A-11 SAIT$300

Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition$1,350

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

SAIT

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH35

6R35

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$300

$1,350

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