Blancpain Fifty Fathoms Flyback Chronograph Complete Calendar offered for sale as watch only. If you're familiar with the Fifty Fathoms line, this is just about the most iconic and complete reference you can buy, and a fantastic value at that. This reference (5066B) takes the iconic steel 45mm FF case and Blancpain's exceptional flyback chronograph movement, 300m water resistance, lumen sapphire diving bezel, and incorporates a complete calendar that features the Month and Day at 12 o'clock; a rotating date hand; and small seconds and moon phase at 6 o'clock. Blancpain then goes a step (a mile?) further with a movement that enables you to adjust all elements at any time with no risk to the movement (contrast this to the Holy Trinity when doing this outside of certain hours voids your warranty and risks movement damage) and makes changes super easy with under-lug correctors for day/date/month/moonphase that can be activated using just your fingernail. It's incredibly ingenious.