The Celestial 5102 is an automatic 18 CT White Gold time piece. As part of the Grand Complications collection, this model exhibits the excellence of the Patek Philippe craftsmanship. It comes with an alligator leather watch strap and has a limited water resistance. The Celestial comes with a Moonphase indicator which tracks the phases of the moon through a decorated disc cut from a wafer of sapphire. The Roman Numerals give this model a beautiful timeless finish as a hallmark to the brand.