Which is cheaper, the CWC RN Automatic Divers Watch Mk.2 or the Tudor Black Bay One 31 S&G?

At MSRP the CWC RN Automatic Divers Watch Mk.2 is the cheaper of the two at $1,249, against $6,850 for the Tudor Black Bay One 31 S&G — a $5,601 gap before any retailer discounting.

Which is bigger, the CWC RN Automatic Divers Watch Mk.2 or the Tudor Black Bay One 31 S&G?

The CWC RN Automatic Divers Watch Mk.2 wears larger at 41mm versus 31mm for the Tudor Black Bay One 31 S&G — a 10mm difference across the dial.

Which has better water resistance, the CWC RN Automatic Divers Watch Mk.2 or the Tudor Black Bay One 31 S&G?

The CWC RN Automatic Divers Watch Mk.2 is rated to 300m versus 100m for the Tudor Black Bay One 31 S&G.

Which has a longer power reserve, the CWC RN Automatic Divers Watch Mk.2 or the Tudor Black Bay One 31 S&G?

The Tudor Black Bay One 31 S&G carries a 50-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 Tudor Black Bay One 31 S&G?

Both watches run automatic movements — the CWC RN Automatic Divers Watch Mk.2 uses the Sellita SW200-1 and the Tudor Black Bay One 31 S&G uses the MT5201.

Side by side

CWC RN Automatic Divers Watch Mk.2vsTudor Black Bay One 31 S&G

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

Tudor Black Bay One 31 S&G

m79603-0001

MSRP $6,850

At a glance

13 of 29 specs differ

Diameter

RN Automatic Divers Watch Mk.241mm

Black Bay One 31 S&G31mm

Power Reserve

RN Automatic Divers Watch Mk.240h

Black Bay One 31 S&G50h

Water Resistance

RN Automatic Divers Watch Mk.2300m

Black Bay One 31 S&G100m

MSRP

RN Automatic Divers Watch Mk.2$1,249

Black Bay One 31 S&G$6,850

Full specifications

Case

8 specs

Crystal & Dial

2 specs

Dial Color

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

Black

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

Sellita SW200-1

MT5201

Power Reserve

40h

50h

Pricing

1 specs

MSRP

$1,249

$6,850

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