Longines guaranteed a precision of one minute ... Ultra-Chron concept underwent rigorous testing and was certified as a chronometer in accordance with ISO 3159 standards. Ultra-Chron Carbon ...

Longines claims the new model weighs less ... delivering more accuracy than a standard chronometer. Importantly, this figure is verified by Geneva-based third-party independent testing ...

Longines introduces its ULTRA-CHRON collection, which adopts carbon - an innovative material that is both strong and light - ...

If you know about dive watches, the Longines Legend Diver is an instant ... And its testing bona fides—it’s a highly precise chronometer and is ISO 6425 certified for water resistance ...