Watch Almanac
Sinn

103 St Sa

Case diameter
41 mm
Measured in a published review
Lug-to-lug
47 mm
Measured in a published review
Thickness
17 mm
Measured in a published review
Lug width
20 mm
Measured in a published review
Ideal fit
Wrist flat: 55.1 mmLug-to-lug: 47 mm

How the 103 St Sa wears

Its lugs add 6 mm to the 41 mm case, close to the 7.1 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6.5" to 7.75" (16.5–19.7 cm); below 6.5" the lugs start to reach the edge of the wrist.

At 17 mm thick it is thicker than 96% of the 24 other chronograph watches we've measured, so expect it to sit tall on the wrist.

Its 20 mm lug width is one of the most common strap sizes; 104 other watches here share it, so aftermarket straps are easy to find.

Will the 103 St Sa fit your wrist?

With a 47 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

WristFlat width (est.)Fit
6"47.2 mmLugs overhang
6.5"51.2 mmIdeal fit
7"55.1 mmIdeal fit
7.5"59.1 mmIdeal fit
8"63 mmWears small

Specifications

Reference
103 St Sa
Collection
103
Status
In production
Case material
stainless steel
Crystal
sapphire
Water resistance
200 m
Style
Chronograph, Pilot

Movement

Movement details coming soon.

Takes 20 mm straps. See other 20 mm watches and straps.

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the 103 St Sa.

Sources