Which is cheaper, the CWC (Cabot Watch Company) RN81 Diver Automatic Watch or the Tudor Black Bay Bronze?

At MSRP the CWC (Cabot Watch Company) RN81 Diver Automatic Watch is the cheaper of the two at $2,858, against $5,425 for the Tudor Black Bay Bronze — a $2,567 gap before any retailer discounting.

Which is bigger, the CWC (Cabot Watch Company) RN81 Diver Automatic Watch or the Tudor Black Bay Bronze?

The CWC (Cabot Watch Company) RN81 Diver Automatic Watch wears larger at 45mm versus 43mm for the Tudor Black Bay Bronze — a 2mm difference across the dial.

Which has better water resistance, the CWC (Cabot Watch Company) RN81 Diver Automatic Watch or the Tudor Black Bay Bronze?

The CWC (Cabot Watch Company) RN81 Diver Automatic Watch is rated to 300m versus 200m for the Tudor Black Bay Bronze.

Which has a longer power reserve, the CWC (Cabot Watch Company) RN81 Diver Automatic Watch or the Tudor Black Bay Bronze?

The Tudor Black Bay Bronze carries a 70-hour power reserve against 40 hours on the CWC (Cabot Watch Company) RN81 Diver Automatic Watch.

What movement does the CWC (Cabot Watch Company) RN81 Diver Automatic Watch run compared to the Tudor Black Bay Bronze?

Both watches run automatic movements — the CWC (Cabot Watch Company) RN81 Diver Automatic Watch uses the Sellita SW200-1 and the Tudor Black Bay Bronze uses the MT5601.

Side by side

CWC (Cabot Watch Company) RN81 Diver Automatic WatchvsTudor Black Bay Bronze

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

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CWC (Cabot Watch Company)RN81 Diver Automatic Watch

cwc-rn81-clearance-diver

MSRP $2,858

Tudor Black Bay Bronze

m79250ba-0001

MSRP $5,425

Buy from CWC (Cabot Watch Company) ↗

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Buy from Tudor ↗

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At a glance

20 of 29 specs differ

Diameter

RN81 Diver Automatic Watch45mm

Black Bay Bronze43mm

Power Reserve

RN81 Diver Automatic Watch40h

Black Bay Bronze70h

Water Resistance

RN81 Diver Automatic Watch300m

Black Bay Bronze200m

MSRP

RN81 Diver Automatic Watch$2,858

Black Bay Bronze$5,425

Full specifications

Case

9 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

—

AR Coating

Inner

—

Dial Color

—

Grey

Indices

Applied

—

Movement

6 specs

Caliber

Sellita SW200-1

MT5601

Beat Rate

28,800 vph

0 vph

Power Reserve

40h

70h

Jewels

Hacking

Yes

Hand-winding

Yes

Pricing

1 specs

MSRP

—

$5,425

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