Side by side

CWC (Cabot Watch Company) RN300 Automatic Diver Mk.1 Tritium Watch With DatevsTudor Black Bay Chrono S&G

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

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RN300 Automatic Diver Mk.1 Tritium Watch With Date
CWC (Cabot Watch Company)RN300 Automatic Diver Mk.1 Tritium Watch With Date
MSRP $3,174
Black Bay Chrono S&G
TudorBlack Bay Chrono S&G
MSRP $8,525
Buy from CWC (Cabot Watch Company) ↗
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Buy from Tudor ↗
Buy used on eBay ↗

At a glance

20 of 29 specs differ
Diameter
RN300 Automatic Diver Mk.1 Tritium Watch With Date40mm
Black Bay Chrono S&G41mm
Power Reserve
RN300 Automatic Diver Mk.1 Tritium Watch With Date40h
Black Bay Chrono S&G70h
Water Resistance
RN300 Automatic Diver Mk.1 Tritium Watch With Date300m
Black Bay Chrono S&G200m
MSRP
RN300 Automatic Diver Mk.1 Tritium Watch With Date$3,174
Black Bay Chrono S&G$8,525

Full specifications

Case

7 specs
Category
—
Chronograph
Diameter
40mm
41mm
Thickness
14.5mm
14.4mm
Lug Width
20mm
22mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
200m
Caseback
Solid
Solid screw-down

Crystal & Dial

5 specs
Crystal
Mineral
Sapphire
Crystal Shape
Flat
—
AR Coating
Inner
—
Dial Color
—
Black
Indices
Applied
—

Movement

7 specs
Caliber
ETA 2824
MT5813
Beat Rate
28,800 vph
0 vph
Power Reserve
40h
70h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Chronograph

Pricing

1 specs
MSRP
—
$8,525
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