Side by side

Serica Ref. 5303 Diving ChronometervsZelos Skyraider 40 Skeleton

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
Skyraider 40 Skeleton
ZelosSkyraider 40 Skeleton
MSRP $1,999

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Skyraider 40 Skeleton40mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Skyraider 40 Skeleton40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Skyraider 40 Skeleton50m
MSRP
Ref. 5303 Diving Chronometer$1,768
Skyraider 40 Skeleton$1,999

Full specifications

Case

6 specs
Category
Diver
Skeleton
Diameter
39mm
40mm
Thickness
12.2mm
8.2mm
Lug-to-Lug
46.5mm
40mm
Material
Stainless Steel
Titanium
Water Resistance
300m
50m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Ti Damascus LE
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
M100 COSC
Swiss Skeletonised Marvin 700
Type
Automatic
Manual
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$1,999

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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.

Zelos Skyraider 40 Skeleton

The Zelos Skyraider 40 Skeleton is noted for its skeletonized dial and the use of BGW9 and C3 Super-LumiNova for legibility. It is powered by a manual-wind ETA 6498 movement, offering a 44-hour power reserve. On balance, the Zelos Skyraider 40 Skeleton is seen as a cool-looking option, though availability is a factor.

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