Richard Mille watches find beauty in the technical, but this colorful new entry in the Swiss watchmaker’s catalog is the firm’s new halo. It is, according to Mille, the most complicated watch they’ve ever produced.

The RM 65-01 Automatic Split Seconds Chronograph is special because it is an automatic rattrapante chronograph that was five years in the making. The works are visible from front and back, revealing a new movement that is the product of Richard Mille and another Swiss watchmaker, Vaucher Manufacture Fleurier, which makes the movements for Hermes, among others.

The colors used in this timepiece aren’t merely for show; in fact, the colors collectively represent a key to the watch’s functions, with each denoting time, chronograph, winding, and the like. The watch features a 60-hour reserve, and is priced at $310K.