Exact, more exact - chronometer. A chronometer is a watch whose precision has been officially tested and certified by an independent testing laboratory. This Certina model has been tested by the Contrôle officiel suisse des chronomètres (COSC), the official Swiss testing authority, and awarded the quality certificate.
A truly multilayer timepiece: The dial of this model is composed of two layers. Its elaborate architecture lends the watch face additional visual depth.