The Blancpain Fifty Fathoms Bathyscaphe Quantième Complet Phases de Lune, reference 5054-0130-B52A, is a masterful expression of Blancpain’s fusion of advanced mechanical watchmaking and contemporary luxury design. Housed in a 43.6 mm satin-brushed black ceramic case, the watch presents a commanding yet refined profile on the wrist. Its Sunburst Black Dialis harmoniously balanced with applied luminous hour markers, a complete calendar display (day, date, month), and a beautifully detailed moon phase complication positioned at 6 o’clock. The unidirectional rotating bezel, also crafted in ceramic with a Liquidmetal® insert, not only reinforces the watch’s diving functionality but also contributes to its ultra-modern, scratch-resistant appearance. At the heart of this timepiece is the Blancpain Caliber 6654.P.4—an in-house, self-winding mechanical movement operating at 28,800 vibrations per hour. This 321-component caliber features dual barrels delivering a robust 72-hour power reserve and incorporates a silicon balance spring for improved magnetic resistance and long-term chronometric stability. The complication-rich movement drives the complete calendar and moon phase functions with precision, while maintaining user convenience through under-lug corrector pushers that allow quick adjustments without marring the case’s sleek lines. A sapphire crystal case back offers a view of the beautifully decorated movement, including traditional Côtes de Genève finishing and a polished gold rotor engraved with the Blancpain logo. Combining technical sophistication with high-end finishing, this model epitomizes Blancpain’s commitment to both functional performance and discreet elegance. With 300 meters of water resistance, it upholds the Fifty Fathoms legacy as a true dive watch, yet it wears comfortably in formal settings thanks to its lightweight ceramic case and refined proportions. Paired with a durable black sail-canvas strap and a secure pin buckle, the 5054-0130-B52A is a luxury timepiece that caters to discerning collectors who value mechanical complexity, innovation, and timeless design in equal measure.

Your deBoulle order will arrive securely via courier, requiring an adult's signature and ID upon delivery. Currently, we can't offer specific time slots, but you'll receive tracking details and estimated delivery dates via email. Delivery within the United States is complimentary. Items are discreetly packaged in branded deBoulle boxes with unmarked external packaging for security. If missed, deliveries can be rescheduled through our Ambassador or courier directly. You can also opt for in-store collection at our Dallas or Houston locations, where you or an authorized individual can pick up your order with proper identification and order confirmation.

Returns or exchanges of your online order can be made within 30 days, either by contacting a deBoulle Ambassador to arrange complimentary online collection or by visiting our Dallas or Houston stores. All returns and exchanges require items to pass a quality control inspection, and refunds typically appear within 10 business days. Customized, bespoke, engraved, or preowned timepieces cannot be returned or exchanged. Gift recipients may return or exchange items, though refunds will be credited to the original purchaser. Items must be unworn, pristine, and include original packaging and certificates.