Side by side

Serica Ref. 5303 Diving ChronometervsNivada Grenchen Super Antarctic 35mm Automatic

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
Super Antarctic 35mm Automatic
Nivada GrenchenSuper Antarctic 35mm Automatic
MSRP $945

At a glance

16 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Super Antarctic 35mm Automatic35mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Super Antarctic 35mm Automatic36h
Water Resistance
Ref. 5303 Diving Chronometer300m
Super Antarctic 35mm Automatic100m
MSRP
Ref. 5303 Diving Chronometer$1,768
Super Antarctic 35mm Automatic$945

Full specifications

Case

8 specs
Category
Diver
Sport
Diameter
39mm
35mm
Thickness
12.2mm
10.1mm
Lug-to-Lug
46.5mm
41.9mm
Lug Width
20mm
18mm
Finish
Brushed and polished
Brushed + Polished
Water Resistance
300m
100m
Caseback
Solid
Engraved

Crystal & Dial

2 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Black

Movement

5 specs
Caliber
M100 COSC
Sellita SW200
Beat Rate
28,800 vph
4 vph
Power Reserve
42h
36h
Jewels
25
18
Complications
COSC
GMT

Pricing

1 specs
MSRP
$1,768
$945

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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.

Nivada Grenchen Super Antarctic 35mm Automatic

The Nivada Grenchen Super Antarctic 35mm Automatic is praised as a fantastic time-only release with excellent legibility due to its large indices and hands, and a comfortable 38mm case. Reviewers highlight its vintage-accurate 10.1mm thinness and 200m water resistance. An owner reports accuracy gains of +6 to +9 seconds per day, and one reviewer notes the "cream" lume color appears too yellow for faux patina. Overall, owners and reviewers rate the Nivada Grenchen Super Antarctic 35mm Automatic highly for its comfortable size and excellent legibility at its price point.

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