Franck Muller 6850 CC QPB Perpetual Calendar Bi Retrograde features a 41mm x 36mm rose gold case and scratch-resistant sapphire crystal. The silver guilloche dial possesses printed hour indices, printed black minute calibrations, retrograde date and small seconds at 3, moonphase at 6, retrograde days and 12 hour indicator at 9, months at 12, and metallic blue center hands with luminous fills. Powering this Perpetual Calendar is a self-winding Swiss movement that boasts about a 42-hour power reserve. Watch is presented on a brown alligator strap with rose gold tang buckle.

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