Side by side

Serica Ref. 5303 Diving ChronometervsLinde Werdelin Oktopus Deep Sea

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
Oktopus Deep Sea
Linde WerdelinOktopus Deep Sea
MSRP $8,102

At a glance

11 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Oktopus Deep Sea44mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Oktopus Deep Sea40h
Water Resistance
Ref. 5303 Diving Chronometer300m
Oktopus Deep Sea300m
MSRP
Ref. 5303 Diving Chronometer$1,768
Oktopus Deep Sea$8,102

Full specifications

Case

4 specs
Diameter
39mm
44mm
Thickness
12.2mm
15.25mm
Lug-to-Lug
46.5mm
46mm
Material
Stainless Steel
Titanium

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Upper
Lume
Super-LumiNova
Superluminova

Movement

3 specs
Caliber
M100 COSC
Power Reserve
42h
40h
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$8,102

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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.

Linde Werdelin Oktopus Deep Sea

The Linde Werdelin Oktopus Deep Sea is lauded for its unique Alloy Linde Werdelin (ALW) case, offering superior strength and lightness, and its exceptional, multi-colored lume developed with Black Badger, which transforms the dial into a vibrant display in low light. Reviewers highlight the watch's comfortable 44mm lugless design and its architecturally striking, multi-layered dial. A minor criticism notes that the big date display is not lumed. Overall, reviewers praise the Linde Werdelin Oktopus Deep Sea for its innovative materials and visually engaging lume application.

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