Maen Grand Tonneau Ultra ThinvsEcho/Neutra Rivanera Piccolo
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Grand Tonneau Ultra Thin

Rivanera Piccolo
Diameter
34mm
33mm
Lug-to-Lug
n/a
33mm
Thickness
6.4mm
lowest
6.9mm
Water Resistance
50m
n/a
Power Reserve
n/a
46h
MSRP
$1,519
lowest
$1,980
Movement
Automatic
Sellita SW1000-1
Case
7 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Maen Grand Tonneau Ultra Thin as a unique and well-priced piece. Some owners criticize the dial for being too small and lacking indices, with one owner calling the Maen Grand Tonneau Ultra Thin "hideous with a good movement." The movement is automatic. Overall, owners rate the Maen Grand Tonneau Ultra Thin highly for its value and unique design, despite some finding the dial too small.
The Echo/Neutra Rivanera Piccolo is lauded for its charming and impressive design, featuring a sandblasted titanium case with polished edges and sharp angles. Reviewers highlight the unique Musou Black dial option that absorbs nearly all light. The watch is powered by a Sellita SW1000 automatic movement. One reviewer suggested removing the date for a cleaner aesthetic, while another noted the straps lack a quick-release system. Overall, reviewers praise the Echo/Neutra Rivanera Piccolo for its distinctive design and material execution.
The thin 6.9mm case is a standout feature. Reviewers noted the Grade 5 titanium case construction. No shared weaknesses were identified.
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