Sinn U1 review



Whilst attractive enough, the Sinn U1’s major advantage over the competition is its superior levels of resistance to extreme conditions and external influences.  The Sinn engineers found that by using steel used traditional for submarines that they could produce a watch of unparalleled and unrivaled durability.


The steel the U1 is made from is the same steel that is used to produce the most advance, non-nuclear submarines in the world; this makes them incredibly resistant to sea water and also makes them free of any residual magnetism.  It is extremely low pressure resistant to boot too.

The rotating bezel is attached as a captive bezel to the centre of the case to avoid detachment during any hard impacts.  Radially offset locking pin positions ensure the toothed ring is protected and contributes towards a long life and reliable function.

We do not have a hands on review of this watch yet. If you’d like to see us review this watch in detail soon, let us know at


Make: Sinn
Model: U1
Case diameter:  44 mm
Case thickness: 14.3 mm
Lug width: 22 mm
Movement: SW 200-1 self-winding mechanism
Crystal: Sapphire crystal glass
Strap or bracelet: Options available
Water resistance: 100 bar/1000 meters
Price: £1,170 from


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