Side by side

Sternglas Naos Pro AutomatikvsTissot Le Locle Open Heart

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

Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755
Le Locle Open Heart
TissotLe Locle Open Heart
MSRP $995

At a glance

13 of 29 specs differ
Diameter
Naos Pro Automatik38mm
Le Locle Open Heart39.3mm
Power Reserve
Naos Pro Automatik42h
Le Locle Open Heart80h
Water Resistance
Naos Pro Automatik50m
Le Locle Open Heart30m
MSRP
Naos Pro Automatik$755
Le Locle Open Heart$995

Full specifications

Case

6 specs
Category
Dress
Chronograph
Diameter
38mm
39.3mm
Thickness
9mm
9.75mm
Lug-to-Lug
42.4mm
39.3mm
Lug Width
20mm
19mm
Water Resistance
50m
30m

Crystal & Dial

3 specs
Dial Color
Silver
Indices
Applied
Roman
Lume
Luminova Punkte
None

Movement

3 specs
Caliber
Miyota 9015
11 1/2'''
Power Reserve
42h
80h
Jewels
25

Pricing

1 specs
MSRP
$755
$995

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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 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.

Tissot Le Locle Open Heart

Owners widely praise the Tissot Le Locle Open Heart for its elegant aesthetic, featuring a guilloché dial and Roman numerals, and appreciate its practical 80-hour power reserve and Nivachron hairspring. The watch is also noted for offering dual bracelet and strap options, along with a see-through case back. However, one owner flags negative community feedback regarding the comfort of the synthetic leather strap. Overall, owners rate the Tissot Le Locle Open Heart highly for its attractive design and impressive technical specifications at its price point.

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