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Quick TakeThe 856 S is where form flawlessly follows function; a dark knight of the Sinn collection. Its tegimented, black hard-coated case isn't just for show – it's pure, unadulterated resilience. With the Ar-Dehumidifying Technology, it laughs in the face of moisture, while the magnetic field protection shrugs off interference that would cripple lesser timepieces. The matte black dial, with its high-contrast indices and luminescent hands, is a lesson in pure clarity. The beat rate of its SW300-1 movement is like that of a runner. This isn't a watch you wear to impress; it's one you rely on. It embodies a utilitarian aesthetic, where every design element serves a definitive purpose. It will be your trusted companion no matter the environment. The 40mm case diameter is perfect, a great middle ground. The black cowhide strap finishes it beautifully.
DescriptionThe Sinn 856 S, reference number 856.023, is built upon a foundation of instrumental timekeeping principles. Its core functionality is derived from the SW300-1 self-winding movement. This mechanism features 25 bearing jewels and operates at a frequency of 28,800 semi-oscillations per hour (4 Hz), providing a smooth sweep of the seconds hand. It is equipped to resist magnetic interference, meeting the requirements of DIN 8309 standards for anti-magnetic watches. Furthermore, it incorporates a seconds stop function, permitting precise time setting. The engineering of the movement reflects current production standards from Frankfurt am Main, although minor variations may exist in stocked items due to ongoing technical advancements.
The watch case's design prioritizes durability and legibility. Constructed from stainless steel, the 40mm diameter case undergoes a black hard coating process applied on a TEGIMENT technology basis. This increases scratch resistance substantially. The case incorporates a screw-fastened, nickel-free case back, protecting the wearer from potential allergic reactions. A screwable crown helps ensure water resistance. The 856 S is also water and pressure-resistant to 20 bar, equivalent to a depth of approximately 200 meters, and it maintains functionality under low-pressure conditions. Sinn's Ar-Dehumidifying Technology is integrated to enhance functional reliability and eliminate internal fogging. Added protection is provided through Magnetic Field Protection, shielding the movement from fields up to 100mT (80,000 A/m). The dial, protected by a sapphire crystal with anti-reflective coating on both sides, is matte black, with numerals and indices coated with a long-lasting luminescent material. The hour and minute hands are likewise treated with luminescent paint, ensuring readability in dark or low-light conditions. The captive bezel aids the pilot during use. Band lug width measures 20 mm and the case thickness measures 11mm. The overall weight, sans strap, is 70 grams.