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URWERK presents its iconic 103 with a steel case. But not just any steel case, the 103.08 is the world's first wristwatch treated with TiAlN - Titanium Aluminum Nitride. The coating on the steel 103.08 is the hardest yet known in the world of haute horlogerie. A TiAlN coating less than 4 microns thick has the effect of multiplying the resistance of the underlying metal to scratches, shocks, oxidation and even acids. The 103.08 is lighter than its gold and platinum stable mates, yet much, much harder.

Hardness comparison's figures:
Gold : 380Vickers
Steel : 600 Vickers
TiAlN coat : 3500 Vickers
Sapphire: 4000 Vickers

Technical Details
Further Information

• 103 collection
• UR103
• 103.08 TiAlN
• UR103T
• UR103T AlTiN
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