Side by side

Serica Ref. 5303 Diving ChronometervsSternglas Naos XS

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 XS
SternglasNaos XS
MSRP $247

At a glance

15 of 29 specs differ
Diameter
Ref. 5303 Diving Chronometer39mm
Naos XS33mm
Power Reserve
Ref. 5303 Diving Chronometer42h
Naos XS
Water Resistance
Ref. 5303 Diving Chronometer300m
Naos XS50m
MSRP
Ref. 5303 Diving Chronometer$1,768
Naos XS$247

Full specifications

Case

6 specs
Category
Diver
Dress
Diameter
39mm
33mm
Thickness
12.2mm
6mm
Lug-to-Lug
46.5mm
36mm
Lug Width
20mm
16mm
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 784
Type
Automatic
Quartz
Power Reserve
42h
Jewels
25
Complications
COSC
None

Pricing

1 specs
MSRP
$1,768
$247

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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 XS

Owners widely praise the Sternglas Naos XS for its simple, awesome design, domed sapphire crystal, and clean hands, with one owner highlighting the beautiful blue mother-of-pearl dial and top-notch build quality on a special edition. It is recommended as a durable, refined daily wear watch for around $270, suitable for casual and formal occasions. However, one owner found the Sternglas Naos XS to have a cheap feel and a face resembling a toy, noting it wears smaller than expected, while another described the automatic movement as a bit noisy. On balance, owners rate the Sternglas Naos XS highly for its refined design and value, with specific praise for the mother-of-pearl dial on special editions.

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