Sinn U2 EZM5The Sinn U2 is designed to be
virtually impervious to water penetration. The Sinn U2 case is made from the same German
steel that is also used in the construction of the outer hull of submarines. The steel was by 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 submarine steel is not only extraordinarily sea water resistant,
it possesses also the highest anti-magnetic quality. Because of the special steel used from the submarine steel manufacturer, and the use of Sinn's Tegiment technology, this bezel can be hardened up to
1500 Vickers instead of the usual 220 Vickers. Further, the entire case resists the effects of exposure to salt water and salt water environments. The uni-directional ratchet operated rotating bezel is also milled from this submarine steel.
The indices are machined directly into the bezel without the use of bezel inserts, which can corrode or come loose at deep depths. The international testing lab of Germanischen Lloyd has tested the U2, and determined that the watch can be
certified as water resistant to 2,000 meters. This same firm tests submarines for their ability to withstand the effects of underwater use. The watch has an automatic mechanical movement, operating at 28,800 beats per hour, shockproof according to DIN 8308 specification and anti-magnetic according to DIN 8309 specification.
It operates in temperatures between -45° Celsius to +80° Celsius due to the special lubricants in the movement applied in the Sinn laboratory. The new Sinn U2 has full UTC functionality through the use of an additional short red tipped hour hand which can be set independently from the primary time zone and indicates the second time zone using a 24 hour display. Screw down crown. The U2
features an argon filled cavity with two copper sulphate water absorbing capsules, which are visible at 6. Matte black dial with date at 3, Super Luminova on hands and markers, and striking red seconds hand complete the design. Other features include
sapphire crystal with anti-reflective coating, and rubber strap with double push deployant buckle and fliplock safety clasp.
