Richard Mille RM 07 Guide: RM 07-01, 07-02, 07-04 Specs & Prices | Ultimate Watch

The detail collectors miss on the RM 07 is the variable-geometry rotor, and it is the whole reason the line works mechanically. Richard Mille understood that a woman's wrist often moves less than a man's over a day, and a conventional automatic left on a quieter wrist can drift toward underwound. The variable-geometry rotor lets the winding be tuned so the watch stays fully wound in real-world wear. That is not marketing, it is the engineering answer to a real problem nobody else bothered to solve for women's automatics. The other piece of lore is the RM 07-02 sapphire case: cut from a single block of colored sapphire and taking roughly 40 days of machining per case, it is one of the most difficult women's cases in modern watchmaking, and the Pink Lady Sapphire's US$980,000 launch price put it among the most expensive women's watches ever made when it appeared in 2015. And for anyone who still thinks a women's watch cannot be a tool watch, the RM 07-04 Automatic Sport settled it: roughly 36 grams on the wrist, 5,000 g of shock resistance, and three years of development to build the compact CRMA8 that made it possible.