Rolex Sky-Dweller /Root/Start/Baume & Mercier/Classima Lady the Portofino Chronograph 39 is

the Portofino Chronograph 39 is designed as an elegant companion — a watch for occasions where a chronograph should not read as sporting

The Chronomat B01 42 combines a powerful design with precise chronograph technology and a construction that performs confidently in demanding everyday use

Robust sapphire crystal optimally protects the dial

The scratch-resistant sapphire crystal protects the dial even under extreme conditions

Rolex Sky-Dweller /Root/Start/Baume & Mercier/Classima Lady the Portofino Chronograph 39 isRolex Sky Dweller (Reference 336938 0008) The operating logic of the Sky Dweller is its true feat of ingenuity: the rotating Ringlock bezel determines whether the crown adjusts the local time, the reference time, or the date eliminating the need for a second pusher. The manufacture calibre 9002 offers 72 hours of power reserve and is certified as a Superlative Chronometer. The Annual Calendar distinguishes between long and short months and requires