Side by side

Maen Grand Tonneau Ultra ThinvsMassena LAB Uni-Racer

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
Uni-Racer
Massena LABUni-Racer
MSRP $3,495

At a glance

15 of 29 specs differ
Diameter
Grand Tonneau Ultra Thin34mm
Uni-Racer39mm
Power Reserve
Grand Tonneau Ultra Thin40h
Uni-Racer58h
Water Resistance
Grand Tonneau Ultra Thin50m
Uni-Racer50m
MSRP
Grand Tonneau Ultra Thin$1,519
Uni-Racer$3,495

Full specifications

Case

6 specs
Category
Dress
Chronograph
Diameter
34mm
39mm
Thickness
6.4mm
9mm
Lug-to-Lug
46mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

4 specs
Crystal
Sapphire
Acrylic
Crystal Shape
Flat
Domed
AR Coating
Inner
No
Dial Color
MNL.04
White

Movement

4 specs
Caliber
SW510 BH M Elaboré
Type
Automatic
Manual
Power Reserve
40h
58h
Jewels
25
23

Pricing

1 specs
MSRP
$1,519
$3,495

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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.

Massena LAB Uni-Racer

The Massena LAB Uni-Racer is praised for its refined vintage chronograph aesthetic, featuring a 39mm case with unique horizontal finishing, a GPHG-nominated hand-wound Sellita SW510 M movement, and a sector dial with a "big eye" counter. Owners and reviewers highlight its period-perfect Super-LumiNova and snailing on recessed registers, all supported by a 58-hour power reserve and 50m water resistance. On balance, owners and reviewers rate the Massena LAB Uni-Racer highly for its authentic vintage design and refined execution at its price point.

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