The Blancpain Fifty Fathoms Bathyscaphe Chronographe Flyback features a 43.6mm satin-brushed black ceramic case with a sunburst blue dial. Powered by calibre F385 at 5Hz for 1/10th second precision with flyback chronograph, 50-hour power reserve. Unidirectional rotating ceramic bezel, 300m water resistance. Sail-canvas strap.