Side by side

Sinn 903 St IIvsMaen Grand Tonneau Ultra Thin

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

903 St II
Sinn903 St II
MSRP $3,942
Grand Tonneau Ultra Thin
MaenGrand Tonneau Ultra Thin
MSRP $1,519

At a glance

17 of 29 specs differ
Diameter
903 St II41mm
Grand Tonneau Ultra Thin34mm
Power Reserve
903 St II60h
Grand Tonneau Ultra Thin40h
Water Resistance
903 St II200m
Grand Tonneau Ultra Thin50m
MSRP
903 St II$3,942
Grand Tonneau Ultra Thin$1,519

Full specifications

Case

8 specs
Category
Tool
Dress
Diameter
41mm
34mm
Thickness
14.5mm
6.4mm
Lug Width
22mm
Material
Stainless Steel
316L Stainless Steel
Finish
polished / satinized
Brushed and polished
Water Resistance
200m
50m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
MNL.04
Indices
Applied

Movement

4 specs
Caliber
LJP L110
Power Reserve
60h
40h
Jewels
26
25
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$3,942
$1,519

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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.

Sinn 903 St II

The Sinn 903 St II is widely praised for its robust build quality, over-engineered feel, and strong value proposition, featuring 200 meters of water resistance and a La Joux-Perret L110 column-wheel chronograph movement. Owners appreciate the hybrid ceramic lume and the practical functionality of the slide rule operated by the bezel. However, reviewers note that the busy slide-rule dial can make time-reading challenging, with some finding the chronograph hand's placement over the "12" numeral less refined. On balance, owners and reviewers rate the Sinn 903 St II highly for its exceptional build quality and value, particularly its robust water resistance and functional slide rule at its price point.

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.

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