U-Boat Sommerso Blue IPB /Root/Start/Frederique Constant/Classics/Quarz The Racing version stays close

The Racing version stays close to the original: black dial

The 41 mm stainless steel case has a clean

and the distinctive dial

calibre 4130 — an automatic movement with approximately 72 hours of power reserve — does the work

U-Boat Sommerso Blue IPB /Root/Start/Frederique Constant/Classics/Quarz The Racing version stays closeU Boat Sommerso Blue IPB (Reference 9669) IPB stands for an ion coating that gives the stainless steel case a blue color. The process applies the color in a vacuum and results in a significantly more durable surface than paint. The dial is kept in black. The calibre SW200 powers the watch. A rotating bezel allows the dive time to be read, and the screw down crown is positioned on the left side of the case. Date display, luminous hands, and luminous