The Sinn U1 S E Ref. 1010.023 is a professional-grade diver’s watch that takes the robust DNA of the legendary U1 and elevates it with a striking all-black aesthetic, crafted for those who demand performance without compromise . Its formidable 44mm case is hewn from high-strength, seawater-resistant German Submarine Steel, a material renowned for its extreme corrosion resistance and superior non-magnetic properties, and is further fortified by Sinn’s proprietary TEGIMENT Technology and a Black Hard Coating for an unparalleled level of scratch resistance and a stealthy, modern look . The watch is powered by the reliable Sellita SW 200-1 automatic movement, a workhorse caliber with 26 jewels and a 38-hour power reserve, ensuring precision timekeeping with a convenient date display at 3 o’clock . Its matte black dial is a study in legibility, featuring oversized hands and indices coated in a warm, beige luminescent color for exceptional visibility in the darkest depths . This functional design is protected by a scratch-resistant sapphire crystal with anti-reflective coating on both sides, while the captive diver’s bezel with minute ratcheting ensures precise dive timing and is virtually impossible to detach from the case . Certified by DNV GL to meet European diving equipment standards, the U1 S E offers a remarkable 100 ATM (1,000 meters) of water resistance, backed by a screw-down crown and caseback, making it an instrument of unparalleled reliability for professional and recreational divers alike . Completed with a black leather strap, this timepiece is a testament to Sinn’s engineering mastery, offering a perfect synthesis of extreme durability, technical sophistication, and purposeful design for the discerning collector. Key specifications: 44mm steel case with Black Hard Coating; matte black dial with beige luminescent hands/indices; Sellita SW 200-1 automatic movement; date display; 1,000m water resistance; sapphire crystal; black leather strap.
