Side by side

Cincinnati Watch Company P-40 A-11 Pilot Black AutomaticvsSeiko Prospex Sea

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
Prospex Sea
SeikoProspex Sea
MSRP $625

At a glance

17 of 29 specs differ
Diameter
P-40 A-11 Pilot Black Automatic38mm
Prospex Sea43.8mm
Power Reserve
P-40 A-11 Pilot Black Automatic65h
Prospex Sea41h
Water Resistance
P-40 A-11 Pilot Black Automatic100m
Prospex Sea200m
MSRP
P-40 A-11 Pilot Black Automatic$895
Prospex Sea$625

Full specifications

Case

9 specs
Category
Pilot
Diver
Diameter
38mm
43.8mm
Thickness
10.8mm
12.8mm
Lug-to-Lug
46.5mm
48.7mm
Lug Width
20mm
22mm
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
Flat
AR Coating
Underside
Anti-reflective coating on inner surface
Indices
Applied
Lume
X1 C3
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW200-2
4R35
Power Reserve
65h
41h
Jewels
26
23

Pricing

1 specs
MSRP
$895
$625

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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

The Seiko Prospex Sea is widely praised for its excellent value, solid build quality, and comfortable wearability, with many models featuring impressive lume and attractive dials. Owners and reviewers highlight the modern upgrades on classic designs, such as drilled lugs and reliable movements with hacking and hand-winding capabilities. Some models are noted for their refined case finishing and scratch resistance. Accuracy figures vary, with one owner reporting approximately 4 seconds fast per day, while others find the movements offer good performance for the price. Concerns raised by owners and reviewers include clasps that can feel generic or cheap, and lug widths that some find disproportionate to the case size on certain models. The thickness and weight of some Prospex Sea watches are also noted as substantial. The GMT function on specific models is considered secondary and difficult to read for true travel purposes.

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