This limited edition Sinn U15 is made from decommissioned German U-boat steel and features a unique dial inspired by the view from open water at 30 meters. The watch has a 41MM case, automatic Sellita cal SW300-1 movement, Sinn's H link quick adjust steel bracelet, and comes with an added Sinn black rubber strap.

• Condition: Mint, almost
• Material: Steel from decommissioned German U-boat
• Case size: 41MM diameter
• Movement: Automatic Sellita cal SW300-1

The Sinn U15 Limited Edition (2025) is a professional-grade dive watch produced in just 1,000 pieces worldwide. It's crafted in German Submarine Steel and features a 44mm case for bold wrist presence.

• Condition: lightly preowned, minor desk diving marks on clasp
• Case size: 44mm diameter
• Lug length: 47.5mm
• Thickness: 11.2mm