Side by side

Hamilton Jazzmaster Auto ChronovsSternglas Naos Pro Automatik

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Jazzmaster Auto Chrono
HamiltonJazzmaster Auto Chrono
MSRP $1,845
Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Hamilton Jazzmaster Auto Chrono

Owners widely praise the Hamilton Jazzmaster Auto Chrono for its excellent value, blend of classy and sporty design, and detailed dial with applied markers. The watch is noted for its impressive accuracy, with figures ranging from +0.5 to +3 seconds per day. Its 42mm case is described as a classic size with a mix of polished and brushed finishes, and the reverse panda dial is a particular highlight for some. However, the lume is consistently criticized as fading quickly and being underwhelming, and the internal bezel's functionality is found to be cumbersome. One owner found the watch too formal for their needs, while another noted the square case can wear larger than some alternatives. Overall, owners rate the Hamilton Jazzmaster Auto Chrono highly for its exceptional value and attractive, accurate timekeeping.

From video reviewers

The watch features a quality automatic chronograph movement. The date setting mechanism, requiring a specialized pusher tool, is a notable drawback. Reviewers disagreed on whether the watch competes effectively with luxury alternatives at its price point.

Sternglas Naos Pro Automatik

The Sternglas Naos Pro Automatik is praised for its slim 9mm case and Bauhaus dial design, featuring clear hour markers and a framed date window. Owners note the upgraded Miyota 9015 movement with a 4Hz beat rate. Accuracy is reported as -10/+30 seconds per day, which is not ideal for precision enthusiasts. The five-link bracelet's lack of fitted end-links and the optional bracelet's chunkiness are flagged as areas lacking refinement. Overall, reviewers highlight the Sternglas Naos Pro Automatik's improved wearability and premium feel at its price point.

From video reviewers

The Bauhaus design is a strength. The value proposition is a weakness.

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Auto Chrono42mm
Naos Pro Automatik38mm
Power Reserve
Jazzmaster Auto Chrono60h
Naos Pro Automatik42h
Water Resistance
Jazzmaster Auto Chrono100m
Naos Pro Automatik50m
MSRP
Jazzmaster Auto Chrono$1,845
Naos Pro Automatik$755

Full specifications

Case

6 specs
Category
Chronograph
Dress
Diameter
42mm
38mm
Thickness
14.83mm
9mm
Lug-to-Lug
46mm
42.4mm
Lug Width
22mm
20mm
Water Resistance
100m
50m

Crystal & Dial

2 specs
Dial Color
Black
Lume
None
Luminova Punkte

Movement

3 specs
Caliber
H-31
Miyota 9015
Power Reserve
60h
42h
Jewels
25

Pricing

1 specs
MSRP
$1,845
$755
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