Side by side

Serica Ref. 5303 Diving ChronometervsSternglas Naos

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
Naos
SternglasNaos
MSRP $323

At a glance

14 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Naos38mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Naos
Water Resistance
Ref. 5303 Diving Chronometer300m
Naos50m
MSRP
Ref. 5303 Diving Chronometer$1,768
Naos$323

Full specifications

Case

5 specs
Category
Diver
Dress
Diameter
39mm
38mm
Thickness
12.2mm
7.2mm
Lug-to-Lug
46.5mm
41mm
Water Resistance
300m
50m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Dial Color
Enamel Black
Lume
Super-LumiNova
None

Movement

5 specs
Caliber
M100 COSC
Ronda 714
Type
Automatic
Quartz
Power Reserve
42h
Jewels
25
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$323

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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.

Sternglas Naos

The Sternglas Naos is widely praised for its refined daily wearability and Bauhaus design, with owners noting its durable construction, scratchless sapphire crystal, and flawless date mechanism. Reviewers highlight the comfortable and supple bracelet that drapes well and a date window that matches the dial. One owner advises replacing the original tan strap due to a lack of durability. The quartz movement is noted for its accuracy, and the absence of a seconds hand is seen as a unique solution to prevent misaligned markers. Overall, owners and reviewers rate the Sternglas Naos highly for its harmonious design and comfortable wear at its price point.

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