Which is cheaper, the CWC RN Automatic Divers Watch Mk.2 or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

At MSRP the CWC RN Automatic Divers Watch Mk.2 is the cheaper of the two at $1,249, against $1,350 for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition — a $101 gap before any retailer discounting.

Which is bigger, the CWC RN Automatic Divers Watch Mk.2 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 41mm for the CWC RN Automatic Divers Watch Mk.2 — a 1.7mm difference across the dial.

Which has better water resistance, the CWC RN Automatic Divers Watch Mk.2 or the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

The CWC RN Automatic Divers Watch Mk.2 is rated to 300m versus 200m for the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition.

Which has a longer power reserve, the CWC RN Automatic Divers Watch Mk.2 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 CWC RN Automatic Divers Watch Mk.2.

What movement does the CWC RN Automatic Divers Watch Mk.2 run compared to the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition?

Both watches run automatic movements — the CWC RN Automatic Divers Watch Mk.2 uses the Sellita SW200-1 and the Seiko Prospex Sea 1970 Heritage Diver's Save the Ocean Special Edition uses the 6R35.

Side by side

CWC RN Automatic Divers Watch Mk.2vsSeiko 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.

CWC RN Automatic Divers Watch Mk.2

cwc-royal-navy-diver-automatic-mk2

MSRP $1,249

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

spb301j1

MSRP $1,350

At a glance

12 of 29 specs differ

Diameter

RN Automatic Divers Watch Mk.241mm

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

Power Reserve

RN Automatic Divers Watch Mk.240h

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

Water Resistance

RN Automatic Divers Watch Mk.2300m

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

MSRP

RN Automatic Divers Watch Mk.2$1,249

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

Full specifications

Case

4 specs

Diameter

41mm

42.7mm

Thickness

12mm

13.2mm

Lug-to-Lug

47mm

46.4mm

Water Resistance

300m

200m

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

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

Black

Lume

Super-LumiNova

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Sellita SW200-1

6R35

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$1,249

$1,350

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