Details

The Blancpain Fifty Fathoms Bathyscaphe Quantième Annuel, reference 5071-1110-B52A, is a rare and refined expression of high-end mechanical watchmaking, combining the robust spirit of a dive watch with the complexity of an annual calendar. Crafted in a 43 mm satin-brushed stainless steel case, the watch exudes a clean, technical aesthetic that reflects Blancpain’s modern interpretation of the Bathyscaphe line. Its meteor grey dial features a sunburst finish with applied luminous markers and hands for optimal readability, while the annual calendar is subtly integrated through three apertures for the day, date, and month—adding practical sophistication without disrupting the dial’s symmetry. Inside beats the Blancpain Caliber 6054.P, a self-winding mechanical movement built in-house, operating at 4 Hz (28,800 vph) with a 72-hour power reserve. It features a silicon balance spring for enhanced resistance to magnetic fields and long-term precision. Unlike a perpetual calendar, the annual calendar complication requires only one manual correction per year—at the end of February—making it an ideal blend of usability and technical prestige. The movement is visible through the sapphire case back, showcasing meticulous finishing, including Geneva stripes and a gold rotor. The watch is completed with a black sail-canvas strap secured by a pin buckle, emphasizing durability and comfort while preserving its sporty dive watch identity. Water-resistant to 300 meters, the 5071-1110-B52A is one of the rare instances where an annual calendar is seamlessly housed in a true diver’s watch. It's a distinctive and highly collectible piece for those who appreciate both functional innovation and understated luxury.