Sinn U15, U16, and U18 – The Sinn U-Series Diving Watches Utilizing Decommissioned Submarine Steel
Reading Time: 2 minutesThe Sinn U15, U16, and U18 diving watches represent a synthesis of historical naval engineering and contemporary horological innovation. These timepieces incorporate high-strength German Submarine Steel sourced from decommissioned Type 206 submarines, with each model limited to 1,000 units. Their pressure-resistant cases distinguish the U15, U16, and U18, certified waterContinue Reading