Side by side

Sinn 903 St IIvsBremont ALT1-C

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
ALT1-C
BremontALT1-C
MSRP $6,150
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.

Bremont ALT1-C

Owners widely praise the Bremont ALT1-C for its flawless brushed case finish, attractive cream dial with excellent contrast from anthracite sub-dials, and comfortable, balanced wearability. The watch features a well-finished strap and a movement that is a joy to wind, with precise chronograph operation. Reviewers note refined feuille hands and polished Arabic numerals with a golden tinge, balancing ruggedness with elegance. The Bremont ALT1-C averages +3 seconds per day, though one reviewer flags its 16mm height as less than ideal for under-cuff wear and describes the date window as narrow. The modified Valjoux 7750 movement's rotor spin is noticeable. Overall, owners rate the Bremont ALT1-C highly for its refined aesthetics and enjoyable user experience.

At a glance

16 of 29 specs differ
Diameter
903 St II41mm
ALT1-C43mm
Power Reserve
903 St II60h
ALT1-C40h
Water Resistance
903 St II200m
ALT1-C100m
MSRP
903 St II$3,942
ALT1-C$6,150

Full specifications

Case

7 specs
Category
Tool
Chronograph
Diameter
41mm
43mm
Thickness
14.5mm
16mm
Material
Stainless Steel
316L Stainless Steel
Finish
polished / satinized
Brushed and polished
Water Resistance
200m
100m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Flat
AR Coating
Underside
Inner
Dial Color
Black
Regular length (15cm - 19cm wrist size)
Indices
Applied

Movement

4 specs
Caliber
LJP L110
BE-50AE
Power Reserve
60h
40h
Jewels
26
25
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$3,942
$6,150
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