Side by side

Serica Ref. 5303 Diving ChronometervsCincinnati Watch Company P-40 A-11 Pilot

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

Ref. 5303 Diving Chronometer
SericaRef. 5303 Diving Chronometer
MSRP $1,768
P-40 A-11 Pilot
Cincinnati Watch CompanyP-40 A-11 Pilot
MSRP $695

At a glance

17 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
P-40 A-11 Pilot38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
P-40 A-11 Pilot65h
Water Resistance
Ref. 5303 Diving Chronometer300m
P-40 A-11 Pilot100m
MSRP
Ref. 5303 Diving Chronometer$1,768
P-40 A-11 Pilot$695

Full specifications

Case

7 specs
Category
Diver
Pilot
Diameter
39mm
38mm
Thickness
12.2mm
10.8mm
Material
Stainless Steel
316L Stainless Steel
Finish
Brushed and polished
Water Resistance
300m
100m
Caseback
Solid
Screw Down with Sapphire Display

Crystal & Dial

5 specs
Crystal Shape
Flat
Domed
AR Coating
Yes
Underside
Dial Color
Enamel Black
Brown
Indices
Applied
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
M100 COSC
Sellita SW200-2 b
Power Reserve
42h
65h
Jewels
25
26
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$695

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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.

Serica Ref. 5303 Diving Chronometer

Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, definitive style, and smooth, confident bezel action. The dual scale on the bezel is noted as surprisingly useful, and the crown action, winding, and hacking are reported to work perfectly. One owner describes the Serica 5303-3 as gorgeous and unique, though another notes the crown can appear comically large. On balance, owners rate the Serica Ref. 5303 Diving Chronometer highly for its blend of unique design and robust functionality.

Cincinnati Watch Company P-40 A-11 Pilot

Owners widely praise the Cincinnati Watch Company P-40 A-11 Pilot for its great size, comfortable bracelet, phenomenal timekeeping, simple design, and great craftsmanship. One owner notes the finishing is sharp. Some users wish for a smaller size, and one owner points out the quick-release spring bars can dig in while the bracelet lacks micro-adjustments. Overall, owners rate the Cincinnati Watch Company P-40 A-11 Pilot highly for its great size and phenomenal timekeeping.

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