Rolex Gmt Master Ii 16710 Rectangular Dial 40Mm

GMT-MASTER II – The cosmopolitan watch
Designed to show the time in two different time zones simultaneously, the GMT-Master, launched in 1955, was originally developed as a navigation instrument for professionals criss-crossing the globe. At a time when intercontinental travel was experiencing a repid expansion. It even became the official watch of Pan American World Airways – Beeter known as Pan Am – then the most prominent American intercontinental airline.
On the original 1955 model, the 24-hour graduated bezel insert was divided into two halves – one red, to correspond with daylight hours, and one blue, for night-time. Over the years, the insert has been made available in different colour combinations. Initially made from Olexiglas, it was replaced by anodized aluminium in 1959 and high-technology ceramic in 2005. It also has a new movement that allowed the hour hand to be set independently of the other hands