Side by side

Serica Ref. 5303 Diving ChronometervsNodus Sector II 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
Sector II GMT
NodusSector II GMT
MSRP $525

At a glance

13 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Sector II GMT38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Sector II GMT41h
Water Resistance
Ref. 5303 Diving Chronometer300m
Sector II GMT100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Sector II GMT$525

Full specifications

Case

5 specs
Category
Diver
GMT
Diameter
39mm
38mm
Thickness
12.2mm
11.9mm
Lug-to-Lug
46.5mm
47mm
Water Resistance
300m
100m

Crystal & Dial

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

Movement

4 specs
Caliber
M100 COSC
TMI NH34 (GMT)
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 GMT

Owners and reviewers widely praise the Nodus Sector II GMT for its versatile, refined design and surprisingly good finishing for its compelling price point. The watch features a regulated Seiko NH34 movement, running at +5 seconds per day according to one review, a sapphire crystal with AR coating, and 100 meters of water resistance. Some owners wish for lume on the GMT hand and prefer a bi-directional GMT bezel over the 120-click dive timing bezel, while others find the NH34 movement overpriced for the cost. On balance, owners and reviewers rate the Nodus Sector II GMT highly for its refined design and impressive finishing at its price point.

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