Side by side

Serica Ref. 5303 Diving ChronometervsNodus Contrail GMT

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
Contrail GMT
NodusContrail GMT
MSRP $900

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Contrail GMT40.5mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Contrail GMT42h
Water Resistance
Ref. 5303 Diving Chronometer300m
Contrail GMT200m
MSRP
Ref. 5303 Diving Chronometer$1,768
Contrail GMT$900

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
39mm
40.5mm
Thickness
12.2mm
11.8mm
Lug-to-Lug
46.5mm
46.6mm
Water Resistance
300m
200m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
Miyota 9075 GMT
Power Reserve
42h
42h
Jewels
25
24
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$900

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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 Contrail GMT

The Nodus Contrail GMT is praised for its excellent case and bracelet quality, impressive finishing that suggests a much higher price point, and brilliant proportions, making it a well-executed flier-style GMT. Owners and reviewers highlight its slender 40.5mm case, comfortable flat-link bracelet, and 200 meters of water resistance. The Miyota Caliber 9075 movement is noted, with one source reporting accuracy regulated to +/-8 seconds per day. Some find the red Contrail name on the dial and red numerals on the roulette disc difficult to read, and the small crown and large guards may be tedious for some. One user questioned the bidirectional bezel's lack of a 60-minute index despite the existing 24-hour scale. Overall, owners and reviewers rate the Nodus Contrail GMT highly for its value and build quality at its price point.

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