As well as beautifully measuring every moment on earth; this timepiece follows the phases of the moon, which makes perfect sense given that the Speedmaster was the first watch ever to be worn on the lunar surface. As a Master Chronometer, the Moonphase celebrates another pioneering moment: OMEGA's exacting new standard of testing approved by METAS in 2015.

A brief astronomy lesson: a lunar month is not 30 days, but slightly more than 29.5 days. A difficult time-span to manage for a standard gear train, but OMEGA's Moonphase is up to the task. Its highly accurate mechanism only needs adjusting after 10 years, and all it takes is a few turns of the crown.