Side by side

Hamilton Jazzmaster Performer AutochronovsSternglas Naos Pro GMT Automatik

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

Jazzmaster Performer Autochrono
HamiltonJazzmaster Performer Autochrono
MSRP $2,645
Naos Pro GMT Automatik
SternglasNaos Pro GMT Automatik
MSRP $863

At a glance

12 of 29 specs differ
Diameter
Jazzmaster Performer Autochrono42mm
Naos Pro GMT Automatik38mm
Power Reserve
Jazzmaster Performer Autochrono60h
Naos Pro GMT Automatik42h
Water Resistance
Jazzmaster Performer Autochrono100m
Naos Pro GMT Automatik50m
MSRP
Jazzmaster Performer Autochrono$2,645
Naos Pro GMT Automatik$863

Full specifications

Case

6 specs
Category
Chronograph
GMT
Diameter
42mm
38mm
Thickness
15.22mm
11mm
Lug-to-Lug
46mm
42mm
Lug Width
22mm
20mm
Water Resistance
100m
50m

Crystal & Dial

2 specs
Dial Color
Blue
Lume
None
Luminova Punkte

Movement

3 specs
Caliber
H-31
Miyota 9075
Power Reserve
60h
42h
Jewels
25

Pricing

1 specs
MSRP
$2,645
$863

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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.

Hamilton Jazzmaster Performer Autochrono

Owners widely praise the Hamilton Jazzmaster Performer Autochrono for its versatile design, clean no-date dial, and comfortable wearability. Reviewers note the 42mm model features dauphine hands and a tachymeter bezel, powered by the H-31 automatic chronograph movement with a 60-hour power reserve. Some owners report an 80-hour power reserve and find the watch a beautiful choice for daily wear, while others express concerns about the price point and the durability of the black bezel. Accuracy averages just over 2 seconds per day, though one owner experienced an internal issue requiring service. On balance, owners and reviewers appreciate the Hamilton Jazzmaster Performer Autochrono for its attractive styling and daily wearability, despite some reservations regarding its price and bezel durability.

Sternglas Naos Pro GMT Automatik

Owners report the Sternglas Naos can feel underwhelming with a cheap feel and hands resembling office printer output, with some finding it wears smaller than expected and looks like a toy, though others appreciate its understated design. Reviewers highlight the Argo Automatic variant as a compelling sub-€400 mechanical watch with a colorful dial and practical date wheel, suitable for new collectors, featuring a 38mm case and a Miyota 8215 movement. On balance, the consensus is that the Sternglas Naos offers a mixed ownership experience, with its value proposition and entry-level appeal being its strongest points for some.

From video reviewers

The Sternglas Naos Pro GMT Automatik features a clean Bauhaus design that sets it apart from other GMT watches. A notable weakness is the watch's bezel action, which is not as smooth as some reviewers would have liked. Reviewers disagree on the watch's case size, with one reviewer stating it's slightly larger than the original Naos Automatic, while another reviewer doesn't mention this aspect at all.

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