Side by side

Sinn 903 St IIvsZelos GT

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
GT
ZelosGT
MSRP $499

At a glance

17 of 29 specs differ
Diameter
903 St II41mm
GT42mm
Power Reserve
903 St II60h
GT40h
Water Resistance
903 St II200m
GT100m
MSRP
903 St II$3,942
GT$499

Full specifications

Case

8 specs
Category
Tool
Chronograph
Diameter
41mm
42mm
Thickness
14.5mm
10.8mm
Lug-to-Lug
42mm
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
SS - Azzurro
Indices
Applied

Movement

4 specs
Caliber
LJP L110
Miyota 9133
Power Reserve
60h
40h
Jewels
26
25
Complications
Date, Chronograph
None

Pricing

1 specs
MSRP
$3,942
$499

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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.

Zelos GT

The Zelos GT is lauded for its value and bold design, with owners highlighting the cool power reserve meter and superb 3-point micro-adjust bracelet. Some owners find the case and lugs could hug the wrist better, and the bracelet is noted as being quite long, requiring significant link removal for a 7.1-inch wrist. The dark green dial, while inspired by Lamborghini, is described as appearing mostly black. Overall, owners rate the Zelos GT highly for its value and the quality of its bracelet at the price point.

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