This Patek Philippe Aquanaut reference 5168G-010 brought white gold into the enlarged Aquanaut case. Its self-winding caliber 324 S C suits the reference's thin profile, and for a collector looking beyond steel it is the more discreet way into the line. Patek reserved this 42.2mm format for the "Jumbo," giving the Aquanaut a broader span than the earlier midsize executions without thickening it in kind. In white gold the case measures 42.2mm across and 8.25mm thick, a large footprint kept notably flat on the wrist. The khaki green dial is the point of the watch, shifting the Aquanaut away from the black and blue tones that defined the line before it. That change matters because the reference keeps the Aquanaut's most modern proportions while moving the conversation from utility to material and color, which is exactly what makes this variant stand apart within the family.