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

At MSRP the CWC RN Automatic Divers Watch Mk.2 with Date 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 with Date or the Tudor Black Bay One 31 S&G?

The CWC RN Automatic Divers Watch Mk.2 with Date 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 with Date or the Tudor Black Bay One 31 S&G?

The CWC RN Automatic Divers Watch Mk.2 with Date 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 with Date 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 with Date.

What movement does the CWC RN Automatic Divers Watch Mk.2 with Date run compared to the Tudor Black Bay One 31 S&G?

Both watches run automatic movements — the CWC RN Automatic Divers Watch Mk.2 with Date 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.2 with DatevsTudor 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 with Date

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

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.2 with Date41mm

Black Bay One 31 S&G31mm

Power Reserve

RN Automatic Divers Watch Mk.2 with Date40h

Black Bay One 31 S&G50h

Water Resistance

RN Automatic Divers Watch Mk.2 with Date300m

Black Bay One 31 S&G100m

MSRP

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

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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