Introduced in 2015, the Blancpain Fifty Fathoms Bathyscaphe Chronographe Flyback ref. 5200-1110-70B brought the flyback chronograph into the modern Bathyscaphe line with a notably technical and collector-focused execution. Its 43 mm stainless steel case is paired with a matching steel bracelet, giving this reference a more purposeful and integrated character than the strap variants in the family. The metallic gray sunburst dial, set beneath a unidirectional dive bezel with ceramic insert, balances the Bathyscaphe's restrained mid-century design language with the added depth and complexity of a full chronograph display. Powering the watch is Blancpain's in-house caliber F385, a high-frequency automatic flyback chronograph movement that beats at 5 Hz and is widely regarded as one of the stronger modern chronograph calibers in the category. The movement uses a column wheel and vertical clutch architecture, a combination prized by experienced buyers for smooth pusher feel and stable chronograph engagement. Blancpain also equipped the caliber with a silicon balance spring, reinforcing the model's appeal as a serious contemporary tool watch backed by advanced movement engineering. Within the broader Fifty Fathoms lineage, the Bathyscaphe occupies a distinct place as the more streamlined, versatile expression of Blancpain's historic dive watch platform first launched in the 1950s. This reference is not a limited edition and was not made for a specific country or boutique, which makes its appeal rest squarely on specification, design coherence, and everyday wearability rather than artificial scarcity. For collectors seeking a modern dive chronograph with genuine manufacture pedigree, strong underwater capability, and one of Blancpain's most respected automatic calibers, the 5200-1110-70B remains one of the standout steel Bathyscaphe references. Like New with Blancpain box and papers dated 2019.