Making the watch communicate with the smartphone via Bluetooth technology: this is the concept behind Casio's new Edifice. Thanks to the Casio Watch+ app, it is possible to precisely set the time zone in three hundred cities around the world in a simple and intuitive way, find your smartphone with the 'phone finder' function, check the receipt of emails in situations where you cannot access your mobile phone, and set the watch to offline mode when you are in flight. Made entirely of steel, with anti-reflective and scratch-resistant mineral glass, it is solar-powered and guaranteed waterproof to a pressure of 10 atmospheres. The watch is also available in an analogue-digital version that allows the display of the date in the two digital displays at 6 and 12 o'clock. Price: from 299 euros.