Sinn Sinn Divers Automatic Wristwatch U2 SDR (EZM 5) U2 SDR
Sinn U2 SDR Divers Automatic Wristwatch (EZM 5)
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Sinn U2 SDR automatic divers watch. This is like the regular U2 but modified at Sinn to incorporate a black tegimented steel rotating bezel. Other than the black bezel, it is the same as the regular U2. Sinn are well renowned and highly regarded in watch manufacturing as they are innovators and producers of mainly instrument, military and aviation watches. They are know for investing large amounts of money in research and development and have some world leading technical innovations that make their watches highly desirable and collectible. Moreover, they are fanatical about engineering standards , and the Sinn watches are over engineered, without being over designed – and at a price point that does not edge them away from the enthusiasts. The U1 and U2 watches are indeed unique and one of a kind. They keep in line with Sinn’s philosophy of manufacturing watches that are built to the highest standards, and employ the latest in technical developments. The U1 and U2 are designed with specific diving use and totally impervious to water penetration. The U1 and U2 cases are made from stainless steel that 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 (PRE value up to 38), it possesses also the highest anti magnetic quality. The Uni directional ratchet operated rotating bezel is Tegimented where the steel can be hardened on up to 1500 Vickers. Compared to regular 316 L stainless steel which is hardened to approximately 220 Vickers. The indices are machined directly into the bezel without the use of bezel inserts, which can corrode or come loose at deep depths. The watch has the bezel hardened to 1,500 Vickers by the use of Sinn’s tegimented treatment in the Sinn laboratory. The U2 has an argon filled cavity with copper sulphate water absorbing capsule. This model has the capsule visible at the 6 position on the dial. Has a sapphire crystal with anti reflective coating, screw down crown with three gaskets and is water resistant to 2000 metres to DIN 8306 specification. The watch has an ETA 2893-2 automatic 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 U2 has a UTC hand which is a short red dual time hand and this can be independently set from the main hour hand. Mat black dial with date at the 3 position. Super Luminova luminous broad hands and dial markings for maximum legibility. Functional and utility looking red and white hands and sweep second hand. Comes on silicone strap with double push button deployant buckle and fliplock safety clasp. Outstanding watch. Width is 44mm, lug to lug is 50 mm,Â
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Sinn Watches was formed in 1961 by the legendary pilot and flight instructor Helmut Sinn. They began manufacturing flight watches based on his extensive aviation experience, this was primarily based on Mr. Sinn's dissatisfaction with the watches that were available for pilot and navigational purposes at that time. His own designs incorporated the features and functionality that he felt more fit for purpose as an instrument watch. This is a design philosophy that has transcended the company's culture right through to the present day. Sinn is now the world's most eminent manufacturer of high quality, precision, functional and purposeful instrument watches. From the beginning, their emphasis was on creating special purpose instruments that performed under extremely adverse operating conditions such as high speed, high and low pressures and altitudes, intense heat or pressure, extreme cold, high magnetic interference, and submergence in liquids. Sinn are becoming increasingly known for their instrument watches, and are today a force to be reckoned with as they lead the way in instrument watch design. The company changed hands in 1994 when Lothar Schmidt formerly of IWC assumed control and further expanded the boundaries of Sinn’s high tolerance manufacturing expertise. Over the past decade, Sinn has pioneered some innovative new technologies, including oil filled watch chambers to enable operation under extreme pressures, argon gas filled watches to prevent moisture infiltration, impact resistant gear suspensions, and new micro-lubricating techniques. Their timepieces are standard equipment in some of the most dangerous and adverse environments on earth - little surprise their watches are issued to the German military and elite forces. Above all the watches are manufactured and marketed to the world at large. Like the designs and their application areas, the pricing of the Sinn watches is most aggressive, making them available to most people. Due to distribution agreements Sinn watches can only be shipped to the UK and Ireland and certain countries where there is no Sinn agent assigned to that territory. Sinn watches are covered by a two or three year manufacturers warranty depending on the model.