The Blancpain Fifty Fathoms Bathyscaphe Chronographe Flyback (Ref. 5200-1110-NABA) combines Blancpain’s pioneering diving heritage with advanced chronograph technology in a rugged, contemporary design. With its robust case, utilitarian functionality, and sleek monochrome palette, this timepiece is the perfect fusion of technical prowess and everyday wearability. The watch is housed in a 43.6mm satin-brushed stainless steel case, exuding a stealthy, tool-watch aesthetic. It features a richly textured meteor grey dial, providing subtle depth and contrast. The dial is outfitted with three subdials for the chronograph function and a date display between 4 and 5 o’clock, while Super-LumiNova® hands and markers ensure excellent legibility, even in low-light or underwater environments. Powering this watch is the in-house Blancpain Caliber F385, a high-frequency (5 Hz) automatic movement equipped with a flyback chronograph function — allowing you to reset and restart the chronograph instantly with a single push. This column-wheel, vertical-clutch movement ensures seamless operation and precision timing. Through the sapphire crystal caseback, the decorated movement and engraved gold rotor are fully visible, showcasing Blancpain’s mastery in mechanical watchmaking. The caliber delivers a 50-hour power reserve and features anti-magnetic silicon components for durability and performance. Surrounding the dial is a unidirectional rotating bezel with a grey ceramic insert and Liquidmetal® markers, ensuring exceptional scratch resistance and dive functionality. The watch is rated to a depth of 300 meters, making it a fully capable professional dive watch. The black NATO strap gives the watch a military-inspired, rugged look, while providing lightweight comfort and a secure fit — ideal for both aquatic use and daily wear. With its blend of robust chronograph features, sleek steel construction, and high-end mechanical movement, the Blancpain Bathyscaphe Chronographe Flyback 5200-1110-NABA is an exceptional tool watch that lives up to its Fifty Fathoms lineage.

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.