The Sinn U2 is famous for it's well performance and the unique appearance. The Sinn U2 Replica Watch case is manufactured by the same German steel that is also used in the construction of the outer hull of submarines. The steel was procured by Sinn from a steel supplier to Emden GmbH, one of Germanys 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 replica watch movement itself is protected from magnetic fields up to 4,800 A/m. The case resists the effects of exposure to salt water and salt water environments due to the special steel used from the submarine steel manufacturer.
The Sinn U2 belong full UTC functionality by using another short red tipped hour hands that may be set individually in the primary time zone and signifies the second time zone utilizing a 24 hour display. The U2 features an inert gas filled cavity with two copper sulphate humidity absorbing capsules, that are visible at 6. Matte black dial with date at 3, Super Luminova on hands and markers, and striking red seconds hands complete the look. Additional features contain azure very with hardened anti-reflective coating, and stainless steel bracelet.
The Sinn U2 uni-directional ratchet operated rotating bezel is also be milled out of this submarine steel that is Tegimented. The indices are machined into the bezel with not the use of bezel inserts, which could corrode or come loose at deep depths. The international testing lab of Germanischen Lloyd has examined the U2, and figured that water resistance as much as 2,000 meters. This same firm tests submarines for their capability to withstand the results of underwater use.