Side by side

Maen Grand Tonneau Ultra ThinvsSternglas Naos Pro Automatik

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

Grand Tonneau Ultra Thin
MaenGrand Tonneau Ultra Thin
MSRP $1,519
Naos Pro Automatik
SternglasNaos Pro Automatik
MSRP $755

At a glance

11 of 29 specs differ
Diameter
Grand Tonneau Ultra Thin34mm
Naos Pro Automatik38mm
Power Reserve
Grand Tonneau Ultra Thin40h
Naos Pro Automatik42h
Water Resistance
Grand Tonneau Ultra Thin50m
Naos Pro Automatik50m
MSRP
Grand Tonneau Ultra Thin$1,519
Naos Pro Automatik$755

Full specifications

Case

5 specs
Diameter
34mm
38mm
Thickness
6.4mm
9mm
Lug-to-Lug
42.4mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
Dial Color
MNL.04
Lume
None
Luminova Punkte

Movement

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

Pricing

1 specs
MSRP
$1,519
$755

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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.

Maen Grand Tonneau Ultra Thin

Owners widely report the Maen Grand Tonneau Ultra Thin features a La Joux-Perret D101 manual-wind movement and a double-layer enamel dial. Some owners criticize the bracelet design and find the dial too small and lacking indices. One owner describes the Maen Grand Tonneau Ultra Thin as "hideous with a good movement." On balance, owners are divided on the Maen Grand Tonneau Ultra Thin, with some appreciating its movement and dial while others find its design unappealing.

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.

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