Side by side

Sternglas Naos Pro GMT AutomatikvsZelos Helica

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

Naos Pro GMT Automatik
SternglasNaos Pro GMT Automatik
MSRP $863
Helica
ZelosHelica
MSRP $499

At a glance

12 of 29 specs differ
Diameter
Naos Pro GMT Automatik38mm
Helica39mm
Power Reserve
Naos Pro GMT Automatik42h
Helica40h
Water Resistance
Naos Pro GMT Automatik50m
Helica100m
MSRP
Naos Pro GMT Automatik$863
Helica$499

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
38mm
39mm
Thickness
11mm
10.5mm
Lug-to-Lug
42mm
39mm
Material
Stainless Steel
316L Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

2 specs
Dial Color
39 - Wave MOP
Lume
Luminova Punkte
None

Movement

3 specs
Caliber
Miyota 9075
Miyota 9015
Power Reserve
42h
40h
Jewels
25

Pricing

1 specs
MSRP
$863
$499

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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.

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.

Zelos Helica

Owners widely praise the Zelos Helica for its stunning, often color-shifting dials, with specific mentions of the MoP, slate grey, 'Steel Blue', and red opal variants being particularly captivating and artful. The 39mm case size is noted as fitting well on smaller wrists, and the overall build quality and finishing for the price are frequently highlighted as impressive, with one owner calling it "a lot of watch for the price." Some owners appreciate the novel bracelet designs and full lume dials, while others find the bracelet and clasp edges sharp or the clasp lacking on-the-fly adjustment. Opinions on the date window are mixed, with one owner disliking it. The Zelos Helica Moonphase was considered cluttered by one owner, and its $1K USD price point was felt to be steep by another, though popular variants sold out rapidly. Overall, owners rate the Zelos Helica highly for its striking dial designs and impressive value proposition.

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