Details

The Blancpain Fifty Fathoms Bathyscaphe Quantième Annuel, reference 5071-1110-NABA, is a technical and aesthetic triumph, blending the rugged spirit of a true diver’s watch with the refined complexity of an annual calendar. The 43 mm satin-brushed stainless steel case offers a contemporary, understated profile, while its unidirectional rotating bezel—crafted from ceramic and detailed with Liquidmetal™ markers—reinforces the model's professional diving pedigree. The sunburst grey dial provides a sleek backdrop for luminous markers and hands, enhancing visibility even in low-light conditions. At the heart of this timepiece lies the Blancpain Caliber 6054.P.4, an in-house automatic movement beating at 4 Hz (28,800 vph) with a generous 72-hour power reserve. This caliber features an annual calendar complication that intuitively accounts for the varying lengths of months, requiring adjustment only once a year, at the end of February. The movement is equipped with a silicon balance spring for improved resistance to magnetic fields and shocks. Visible through the sapphire case back, the finely decorated movement features traditional haute horlogerie finishing, including Geneva stripes and a solid gold rotor. Water-resistant to 300 meters, the 5071-1110-NABA remains true to the Fifty Fathoms legacy as a genuine dive instrument. It is paired with a black NATO strap, secured by a steel pin buckle, offering both durability and comfort. This model is ideal for watch collectors and enthusiasts who value practical complications and exceptional craftsmanship housed in a bold, maritime-inspired design.