Which is cheaper, the CWC RN Automatic Divers Watch Mk.2 with Date or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Seiko Prospex Sea Save the Ocean Special Edition is the cheaper of the two at $625, against $1,249 for the CWC RN Automatic Divers Watch Mk.2 with Date — a $624 gap before any retailer discounting.

Which is bigger, the CWC RN Automatic Divers Watch Mk.2 with Date or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 45mm versus 41mm for the CWC RN Automatic Divers Watch Mk.2 with Date — a 4mm difference across the dial.

Which has better water resistance, the CWC RN Automatic Divers Watch Mk.2 with Date or the Seiko Prospex Sea Save the Ocean Special Edition?

The CWC RN Automatic Divers Watch Mk.2 with Date is rated to 300m versus 200m for the Seiko Prospex Sea Save the Ocean Special Edition.

Which has a longer power reserve, the CWC RN Automatic Divers Watch Mk.2 with Date or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition carries a 41-hour power reserve against 40 hours on the CWC RN Automatic Divers Watch Mk.2 with Date.

What movement does the CWC RN Automatic Divers Watch Mk.2 with Date run compared to the Seiko Prospex Sea Save the Ocean Special Edition?

Both watches run automatic movements — the CWC RN Automatic Divers Watch Mk.2 with Date uses the Sellita SW200-1 and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R36.

Side by side

CWC RN Automatic Divers Watch Mk.2 with DatevsSeiko Prospex Sea Save the Ocean Special Edition

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

CWC RN Automatic Divers Watch Mk.2 with Date

cwc-royal-navy-diver-automatic-mk2-with-date

MSRP $1,249

Seiko Prospex Sea Save the Ocean Special Edition

srpf77

MSRP $625

At a glance

12 of 29 specs differ

Diameter

RN Automatic Divers Watch Mk.2 with Date41mm

Prospex Sea Save the Ocean Special Edition45mm

Power Reserve

RN Automatic Divers Watch Mk.2 with Date40h

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

RN Automatic Divers Watch Mk.2 with Date300m

Prospex Sea Save the Ocean Special Edition200m

MSRP

RN Automatic Divers Watch Mk.2 with Date$1,249

Prospex Sea Save the Ocean Special Edition$625

Full specifications

Case

5 specs

Diameter

41mm

45mm

Thickness

12mm

13.2mm

Lug-to-Lug

47mm

47.7mm

Lug Width

20mm

22mm

Water Resistance

300m

200m

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

CWC RN Automatic Divers Watch Mk.2 with Date, Stainless Steel (RN300-MT AS120-D)

Black

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW200-1

4R36

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$1,249

$625

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