Side by side

Maen Grand Tonneau Ultra ThinvsSeestern S446 GMT

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
S446 GMT
SeesternS446 GMT
MSRP $299

At a glance

14 of 29 specs differ
Diameter
Grand Tonneau Ultra Thin34mm
S446 GMT39.5mm
Power Reserve
Grand Tonneau Ultra Thin40h
S446 GMT41hh
Water Resistance
Grand Tonneau Ultra Thin50m
S446 GMT100m
MSRP
Grand Tonneau Ultra Thin$1,519
S446 GMT$299

Full specifications

Case

6 specs
Category
Dress
GMT
Diameter
34mm
39.5mm
Thickness
6.4mm
13mm
Lug-to-Lug
47mm
Lug Width
20mm
Water Resistance
50m
100m

Crystal & Dial

2 specs
Crystal Shape
Flat
Domed
Dial Color
MNL.04
Cream

Movement

5 specs
Caliber
Seiko NH34A GMT
Beat Rate
28,800 vph
3 vph
Power Reserve
40h
41hh
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
$1,519
$299

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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.

Seestern S446 GMT

Owners widely praise the Seestern S446 GMT for its stunning finishing and extreme value, with a sapphire crystal and adjustable clasp. The winding action is noted as buttery smooth, and the 39.5mm case size is considered very wearable. Some owners, however, flag the lume as a weak point and one owner found the bracelet clasp lacked sufficient micro-adjustment. The Seestern S446 GMT is considered an extreme value for the dollar. Overall, owners rate the Seestern S446 GMT highly for its exceptional finishing and value proposition at its price point.

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