Side by side

Cincinnati Watch Company P-40 A-11 Pilot Black AutomaticvsSeiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

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

P-40 A-11 Pilot Black Automatic
Cincinnati Watch CompanyP-40 A-11 Pilot Black Automatic
MSRP $895

At a glance

15 of 29 specs differ
Diameter
P-40 A-11 Pilot Black Automatic38mm
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition44mm
Power Reserve
P-40 A-11 Pilot Black Automatic65h
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition50h
Water Resistance
P-40 A-11 Pilot Black Automatic100m
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition200m
MSRP
P-40 A-11 Pilot Black Automatic$895
Prospex Sea 1970 Heritage Diver's Black Series Limited Edition$3,300

Full specifications

Case

8 specs
Category
Pilot
Diver
Diameter
38mm
44mm
Thickness
10.8mm
13mm
Lug-to-Lug
46.5mm
49.3mm
Material
316L Stainless Steel
Stainless Steel
Finish
Brushed and polished
Water Resistance
100m
200m
Caseback
Screw Down w/ Sapphire Display
Solid

Crystal & Dial

4 specs
Crystal Shape
Domed
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Indices
Applied
Lume
X1 C3
LumiBrite on hands, index(es) and bezel

Movement

2 specs
Caliber
Sellita SW200-2
8L35
Power Reserve
65h
50h

Pricing

1 specs
MSRP
$895
$3,300

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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.

Cincinnati Watch Company P-40 A-11 Pilot Black Automatic

Owners widely praise the Cincinnati Watch Company P-40 A-11 Pilot Black Automatic for its sharp finishing, textured pearlescent dial, and excellent lume. The simple, understated design and comfortable 38mm size are also frequently highlighted. Some owners note the bracelet lacks quick micro-adjustments and the quick-release spring bars can dig into the wrist. One owner found the lume blocks potentially thinner and the font on larger numbers less desirable than a standard typeface, though the seconds hand was considered a success. Overall, owners highly recommend the Cincinnati Watch Company P-40 A-11 Pilot Black Automatic for its great craftsmanship and value.

Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition

Owners widely praise the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition for its attractive, well-made design and gorgeous dial, noting its jewel-toned teal color and rippling-water pattern. The bezel action is smooth with a muted sound, and the case and bracelet offer a more comfortable feel than previous iterations. However, multiple owners express disappointment with the accuracy of the 6R movement at its price point, with some noting theirs runs slow, and consider the price too high. The steep rehaut and marker size make the 24-hour numbers difficult to read, and some find the case design makes the watch feel top-heavy despite wearing smaller. Overall, owners rate the Seiko Prospex Sea 1970 Heritage Diver's Black Series Limited Edition highly for its striking dial and refined case design, despite concerns regarding movement accuracy at its price.

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