Which is cheaper, the Praesidus Neptune 44 or the Seiko Prospex Sea The Black Series?

At MSRP the Praesidus Neptune 44 is the cheaper of the two at $550, against $765 for the Seiko Prospex Sea The Black Series — a $215 gap before any retailer discounting.

Which is bigger, the Praesidus Neptune 44 or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series wears larger at 45mm versus 44mm for the Praesidus Neptune 44 — a 1mm difference across the dial.

Which has a longer power reserve, the Praesidus Neptune 44 or the Seiko Prospex Sea The Black Series?

The Seiko Prospex Sea The Black Series carries a 41-hour power reserve against 40 hours on the Praesidus Neptune 44.

What movement does the Praesidus Neptune 44 run compared to the Seiko Prospex Sea The Black Series?

Both watches run automatic movements — the Praesidus Neptune 44 uses the Miyota 9039 and the Seiko Prospex Sea The Black Series uses the 4R36.

Side by side

Praesidus Neptune 44vsSeiko Prospex Sea The Black Series

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

Praesidus Neptune 44

neptune-44-brown

MSRP $550

Seiko Prospex Sea The Black Series

srpk43

MSRP $765

At a glance

12 of 29 specs differ

Diameter

Neptune 4444mm

Prospex Sea The Black Series45mm

Power Reserve

Neptune 4440h

Prospex Sea The Black Series41h

Water Resistance

Neptune 44200m

Prospex Sea The Black Series200m

MSRP

Neptune 44$550

Prospex Sea The Black Series$765

Full specifications

Case

4 specs

Diameter

44mm

45mm

Thickness

—

13.2mm

Lug-to-Lug

—

47.7mm

Material

316L Stainless Steel

Stainless Steel

Crystal & Dial

4 specs

Crystal

Domed Sapphire

Sapphire

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

Patina

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Miyota 9039

4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$550

$765

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