Boucheron is one of the Grand Thunks (5 major jewelery stores in Paris). There is only Boucheron, which has been successful as a jeweler, and its skill is demonstrated in watches. Refre is a collection that is especially popular with women. Originally a collection for men, the minimalist dial surrounded by a delicate and neat rectangular case engraved with a godron pattern has become a favorite of stylish women. It features an invisible clasp system that can be freely replaced by sliding the strap.