The Rolex GMT-Master II 126710BLRO is nicknamed the “Pepsi” due to its use of red and blue Cerachrom bezel, reminiscent of the colors used in the logo of the Pepsi soft drink. While this reference was released in 2018, its roots can be traced back to 1954 with the release of the first Rolex GMT Master model reference 6542, certain examples of which shared the same bi-color bezel.