Moonphase Monday - the ochs und junior moon phase

In oj blue -

Courtesy of ochs und junior

A moon phase with incredibly accuracy, the ochs und junior moon phase eschews the two extremes of this complication: either incredibly complex, or mindlessly dumb with a snap on module.  This one utilizes something completely different -  original thinking.

An ETA 2824-2 undergoes a colossal overhaul... just kidding ; ). A grand total of 5 additional parts make up the complication which operate in harmony with the ETA 2824-2 -

Courtesy of Ochs Und Junior

Per ochs und junior, the secret sauce contains a -

5-part epicyclic gear system designed by Ludwig Oechslin. The calculation is precise for 3,478.27 years before it is off by one day. 

Suffice it to say, keep it wound and you should be good to go.

The case can be had in either titanium or silver, and in (I believe) 3 sizes - 36, 39 and 42 mm in diameter.

Here are the pertinents on the moon phase oj blue, straight from the source -

42mm case | Grade 5 titanium | “oj blue” dial, date disk, and moon disk | White Super-LumiNova markers and sun at 12 o’clock | White Super-LumiNova hour and minute hands | Second hand in dial color for instant visibility of the time | White Super-LumiNova full moon | Dark side of the moon in gray | Orange Super-LumiNova date dot | Choice of strap