Moon-phase watches

Moon-phase watches have a practical purpose: to track the stages of the moon through its monthly cycle. But for anyone who’s not a fisherman or an astrologer, a moon-phase mechanism is a novelty, and it’s a top trend this year. Among the new models to get wound up about are Breguet’s classically elegant minute repeater, IWC’s sporty Grande Complication and Cartier’s chic Tortue XL Day and Night.

Breguet Classique Grande Complication ($284,500) IWC Grande Complication ($195,000) Cartier Tortue XL Day and Night ($40,600)