Introduction to chronometer and COSC certificate First of all, a chronometer is not the same as a chronograph watch. A chronometer is a specific timepiece that has an official COSC certificate, which means that the movement is accurate -4/+6 seconds a day if it is a mechanical watch, or +/- 0.07 (at 23 degrees celsius)  […]

Rolex has an increasing fan base and it is no surprise that they have their own terminology. One amongst these is the popular Rolex Pepsi watch which more formally is known as the Rolex GMT Master II. Even though Rolex Pepsi is just a nickname and has no authorized identity, you are sure to meet […]