Side by side

CWC E9 Automatic Diver WatchvsTudor Black Bay One 31 S&G

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

E9 Automatic Diver Watch
CWCE9 Automatic Diver Watch
MSRP $1,391
Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850

At a glance

13 of 29 specs differ
Diameter
E9 Automatic Diver Watch41mm
Black Bay One 31 S&G31mm
Power Reserve
E9 Automatic Diver Watch40h
Black Bay One 31 S&G50h
Water Resistance
E9 Automatic Diver Watch300m
Black Bay One 31 S&G100m
MSRP
E9 Automatic Diver Watch$1,391
Black Bay One 31 S&G$6,850

Full specifications

Case

8 specs
Category
Diver
Diameter
41mm
31mm
Thickness
12mm
9.5mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
17mm
Finish
Brushed and polished
Polished + Satin
Water Resistance
300m
100m
Caseback
Solid
Solid screw-down

Crystal & Dial

2 specs
Dial Color
CWC E9 Automatic Diver Watch (SF300-E9 AS120)
Black
Lume
Super-LumiNova
None

Movement

2 specs
Caliber
Sellita SW200-1
MT5201
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$1,391
$6,850

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

CWC E9 Automatic Diver Watch

Owners widely praise the CWC E9 Automatic Diver Watch for its military-spec toughness and satisfyingly easy-to-wind crown, with one owner calling it a perfect reissue due to its thin case, small size, and legibility. Some owners appreciate its durability and value as a beater or summer watch, noting its solid bars are a military requirement and highlighting its significant wrist presence and unique "Jolly Roger" dial design. Critics find the CWC E9 Automatic Diver Watch overpriced for its mineral crystal and 60-click bezel, despite its military heritage and HAQ movement, and its luminous paint is noted as low glow. Overall, owners rate the CWC E9 Automatic Diver Watch highly for its military-spec toughness and wrist presence, despite some reservations about its value proposition.

Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G is praised for its quiet luxury, combining brushed steel and warm gold accents for understated charm. Owners appreciate the brushed gold for a casual two-tone look and the champagne dial's surprising legibility. Some find the case sides too thick, and one user expressed a desire for a smaller S&G variant. The watch features the MT5612 movement with a 70-hour power reserve and a date function, within a 200-meter water-resistant case. Overall, owners and reviewers highlight the Tudor Black Bay One 31 S&G's balanced two-tone aesthetic as its primary appeal.

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