Fifty Fathoms Bathyscaphe Quantième Complet 43mm Phases de Lune Strap WatchBlancpain Fifty Fathoms Bathyscaphe Quantime Complet Phases de Lune Strap Watch 5054 3640 O52B. This watch features a 43mm rounded 18ct red gold case on a blue fabric canvas strap, secured with a red gold pin folding clasp. This men's watch has a blue dial with a complete calender showing the date, day of the week and month, and also a moon phase display at the 6 o'clock position. With a satin brushed 18ct red gold bezel, featuring ceramic insert with