Illustration. The seconds hand sweeps, like the real movement.
903 St II
Ref. 903 St II
Also 903.090
41 mm, black sunburst dial with silver counters, slide-rule bezel, steel bracelet
- Diameter
- 41 mm
- Thickness
- 14.5 mm
- Water
- 200 m
- Movement
- L110
€3,550
Sinn's 2024 launch price on the steel bracelet, as reported by Monochrome (EUR 3,250 on leather).
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Why it's interesting
Sinn acquired the rights and parts to Breitling's Navitimer design decades ago and has built its own version ever since. The 2024 update keeps the slide-rule bezel and column-wheel movement and adds 200 m and hybrid-ceramic lume: the Navitimer idea with more engineering and less badge.
Watch DNA. Filled tags are editorial; outlined tags come from the specifications.
The numbers
Verified specificationsSize
- Diameter
- 41mm
- Lug to lug
- —
- Thickness
- 14.5mm
- Lug width
- 22mm
Because you like this…
Chosen for shape, size, colour, character and price. Rarely the same brand twice.
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About this page
Verified specifications, checked September 2026
Dimensions, water resistance, movement and crystal were checked against the sources below.
sinn.de blocks automated access. Case (41 × 14.5 mm), 20 bar, sapphire front and back, 22 mm lugs and LJP L110 from Sinn's text via WatchGecko and Monochrome's launch article, which also gives the 903.090 article number and EUR prices. Weight without strap 83–84 g. Lug-to-lug not published (Monochrome: about 48 mm for the previous generation). Drawing: the slide-rule bezel is approximated with the tachymeter bezel.
The illustration is a bezelga rendering generated from the specifications. It is not a photograph and may simplify details such as logos, text and finishing.
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