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Sinn 903 St II
Ref. 903 St II · Tool
Case
- Diameter
- 41mm
- Thickness
- 14.5mm
- Lug width
- 22mm
- Material
- Stainless Steel
- Finish
- polished / satinized
- Water resistance
- 200m
Crystal & dial
- Crystal
- Sapphire
- AR coating
- Underside
- Dial colour
- Black
Movement
- Caliber
- La Joux-Perret L110
- Type
- Automatic
- Beat rate
- 28,800 vph
- Power reserve
- 60h
- Jewels
- 26
- Hacking
- No
- Hand-winding
- No
- Complications
- Date, Chronograph
Design language
- Case shape
- round
- Dial style
- standard
- Sub-dials
- 3
- Bezel
- rotating
- Bracelet
- metal_oyster
AI-detected from the product image
Series 903 collection · 2 watches
4 colorways
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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.
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