With a diameter of 45 mm and a thickness of 14.1 mm, the BOC IV is perfect for both underwater diving and everyday wear. This model embodies Blancpain’s innovation and watchmaking excellence, as well as its commitment to the oceans. The Grade 23 titanium case, known for its strength and lightness, houses a helium valve for saturation dives in a hyperbaric chamber. The unidirectional bezel with domed black ceramic insert is angled towards the dial, making it easy to use even with diving gloves. Absorbing up to 97% of light, the absolute black dial ensures optimal readability underwater, not to mention the hour-markers formed by luminescent block-shaped appliques. The integrated black rubber strap, combined with the central lugs attached from inside the case, provides exceptional ergonomics and a contemporary style. This watch, which combines comfort, performance, and design, is ideal for both professional and amateur divers.