Blancpain introduced the Fifty Fathoms in 1953, widely regarded as one of the first modern dive watches. It was developed to meet the practical needs of professional divers, with a focus on readability, durability, and water resistance. Over the decades, the Fifty Fathoms established Blancpain as a pioneer in dive watch design. The Bathyscaphe line continues this tradition, offering a modern interpretation that maintains the brand’s historical connection to diving while incorporating updated materials and contemporary finishing.


While the original Fifty Fathoms was designed as a strict tool watch for professional divers, the Bathyscaphe is an adaptation of that original design meant for modern use. It preserves the core principles of durability, legibility, and water resistance, but presents them in a slightly slimmer, more versatile case. The design allows the watch to perform underwater while also being suitable for everyday wear Blancpain has updated materials and finishing throughout the Bathyscaphe line, including a ceramic bezel, carefully applied luminous markers, polished or satin surfaces, and the implementation of new case materials such as the Sedna® gold used in this example.


The name Sedna refers to two different meanings, both relevant to this watch. The dwarf planet Sedna has a reddish hue, which closely resembles the warm tone of the red gold alloy used for the Bathyscaphe case. At the same time, Sedna is also the Inuit goddess of the sea, a connection that reflects the watch’s diving heritage. By choosing this name, Blancpain highlights both the color and the maritime symbolism, creating a link between the material itself and the watch’s purpose as a professional dive instrument. The red gold case not only provides visual warmth but also ensures lasting color and resistance to tarnishing, making it suitable for both daily wear and special occasions.


The Bathyscaphe’s design balances elegance with function. Its 43 mm Sedna® gold case features a satin finish that reduces glare while showcasing the alloy’s rich tone. The sunburst blue dial is subtly graduated, catching light differently as it moves, and pairs with a ceramic bezel insert to maintain a clean, durable surface.
Inside, the watch is Blancpain’s Calibre 1315 automatic movement. It offers a 120-hour power reserve, a silicon balance spring for magnetic resistance, and contains 35 jewels distributed across 227 components. The Bathyscaphe is water resistant to 300 meters, maintaining its utility as a professional dive watch. A sapphire exhibition case back provides a view of the movement.


Full-gold diver watches are relatively rare, and the Bathyscaphe in Sedna® gold stands out within Blancpain’s lineup. Its combination of material, finishing, and functional capabilities appeals to collectors who value both performance and luxury. The blue dial against the warm red gold creates a distinctive aesthetic that makes the watch instantly recognizable. For enthusiasts, it represents a refined statement of taste without sacrificing the core attributes that define a professional dive watch.
The Blancpain Bathyscaphe in Sedna® gold is a rare and highly sought-after timepiece. According to Blancpain, there are only 32 authorized vendors in the United States, making it uncommon to find in stock. Bailey’s is fortunate to be one of these select locations, giving local collectors and enthusiasts the opportunity to see and try this exceptional watch in person. Its limited availability adds to its appeal, making it not just a continuation of a historic line, but a unique piece that represents both craftsmanship and exclusivity.