Side by side

Serica Ref. 5303 Diving ChronometervsNodus Sector II Sport

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
Sector II Sport
NodusSector II Sport
MSRP $525

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Sector II Sport38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Sector II Sport41h
Water Resistance
Ref. 5303 Diving Chronometer300m
Sector II Sport100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Sector II Sport$525

Full specifications

Case

5 specs
Category
Diver
Sport
Diameter
39mm
38mm
Thickness
12.2mm
11.7mm
Lug-to-Lug
46.5mm
47mm
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Domed
Dial Color
Enamel Black
Glossy
Lume
Super-LumiNova
Swiss Super-LumiNova® BGW9 Grade A

Movement

4 specs
Caliber
M100 COSC
TMI NH38 (no-date)
Power Reserve
42h
41h
Jewels
25
24
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$525

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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.

Nodus Sector II Sport

Owners widely praise the Nodus Sector II Sport for its comfortable 38mm wearability, unique three-level sector dial with applied indices, and thin case. Accuracy varies, with one owner reporting plus 4 seconds per day. Criticisms include a bulky clasp with sharp edges, a strong blue AR coating, and the non-reversible bronze bezel patina. The use of an NH38 movement in a watch priced over $500 is also noted. Overall, owners rate the Nodus Sector II Sport highly for its comfortable wearability and unique dial design.

From video reviewers

The crisp, clean dial and robust build quality are consistently praised. The lume on-wrist and water resistance are noted as strengths. Reviewers disagree on the value proposition of the Atlantis Edition due to its scarcity.

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