Side by side

Cincinnati Watch Company P-40 A-11 Pilot Black AutomaticvsSeiko Prospex SPEEDTIMER Mechanical Chronograph

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

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 SPEEDTIMER Mechanical Chronograph

The Seiko Prospex SPEEDTIMER Mechanical Chronograph is praised for its handsome, heritage-inspired design with a clean, balanced dial and an external tachymeter bezel. Reviewers highlight the upgraded case and bracelet, noting improved comfort and good value for a well-designed chronograph with an in-house movement. The caliber 8R48 movement features a vertical clutch and column wheel with MEMS technology for durability and precision. Points to consider include the 4:30 date window and a 14.6mm thickness, while the 45-hour power reserve is noted as an area for potential improvement. On balance, reviewers find the Seiko Prospex SPEEDTIMER Mechanical Chronograph to be a solid offering with good value, particularly for its design and in-house movement.

At a glance

15 of 29 specs differ
Diameter
P-40 A-11 Pilot Black Automatic38mm
Prospex SPEEDTIMER Mechanical Chronograph42mm
Power Reserve
P-40 A-11 Pilot Black Automatic65h
Prospex SPEEDTIMER Mechanical Chronograph45h
Water Resistance
P-40 A-11 Pilot Black Automatic100m
Prospex SPEEDTIMER Mechanical Chronograph100m
MSRP
P-40 A-11 Pilot Black Automatic$895
Prospex SPEEDTIMER Mechanical Chronograph$2,500

Full specifications

Case

6 specs
Category
Pilot
Chronograph
Diameter
38mm
42mm
Thickness
10.8mm
14.6mm
Lug-to-Lug
46.5mm
49.5mm
Material
316L Stainless Steel
Stainless Steel
Caseback
Screw Down w/ Sapphire Display

Crystal & Dial

4 specs
Crystal Shape
Domed
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Black
Lume
X1 C3
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Sellita SW200-1
Seiko 8R48
Beat Rate
28,800 vph
0 vph
Power Reserve
65h
45h
Jewels
26
34

Pricing

1 specs
MSRP
$895
$2,500
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