The Patek Phillipe Annual Calendar 4948 is a larger version of Patek's ladies annual calendar watch; it's case measures 38mm across. It is powered by the trusted caliber 324 S QA LU. The 4938 features a fully diamond-set case, whereas reference 4937 features a diamond-set bezel.Mechanical self-winding movementCaliber 324 S QA LUAnnual CalendarDay and month by handsDate in an apertureCenter sweep second handMoon phasesCase set with 347 diamonds (~2.65 ct)Crown set with 14 diamonds (~0.06 ct)White Balinese mother-of-pearl dial, gold applied numeralsAlligator strap with square scales, hand-stitched, shiny mink gray, prong buckle set with 27 diamonds (~0.21 ct)Sapphire-crystal case backWater resistant to 30 mWhite goldCase diameter: 38 mm
