As the name suggests, Omega's Specialities Collection consists of a number of special edition models, produced in limited numbers. Among the timepieces in this range are the Olympic Games Collection, which are re-imagined versions of the Omega Seamaster", paying tribute to the various Summer and Winter Olympic Games events, including London 2012 and Rio 2016. Staying with the Olympic theme, another of the models is the Olympic Official Timekeeper, which is a Co-Axial Chronograph engraved with the Olympic logo. This model is available in a choice of yellow gold, white gold and pink gold , mimicking the gold, silver and bronze medals given out at the Olympics.