Watch diameter (mm): 44.0

• Watch height (mm): 13.3

• Lug width (mm): 22

• Lug to lug (mm): 50.5

• Weight - head only (grams): 105

• Water resistance: 5,000 meters

• Case back: Solid

• Case finish: Matte

• Case metal: Tegimented PVD / DLC submarine steel

• Dial color: Black

• Front crystal: Sapphire

• Tegimented: Fully

• Movement: Quartz oil filled

• Manufacturer's limited warranty: 3 years

• Strap or bracelet: Bracelet

• Warranty service: Sinn Germ

This watch is far more than simply a black version of the standard Sinn UX. When Sinn first introduced the U Diver's Series several years ago, the most requested feature was an all Tegimented watch (the standard U models feature a Tegimented bezel).

The Sinn UX GSG9 Black is constructed from the same steel that is used on the outer hull of submarines. The steel was procured by Sinn from a steel supplier to Emden GmbH, one of Germany’s North Sea shipbuilding yards who construct submarines from the very same steel. This special steel is also amagnetic which means that is does not have magnetic properties and cannot itself become magnetized. The watch movement itself is protected from magnetic fields up to 4,800 A/m.

Next, the Sinn UX GSG9 Black features a completely Tegimented case, bezel, crown and case back. Standard steel used by most watch companies has a hardness of between 200 and 240 HV (Hardness Vickers is a common scale used to measure material hardness). The Tegiment layer on this watch in combination with the PVD coating has a hardness in excess of 2,000 Vickers which is more than nine times harder than standard steel.