Les Cabinotiers Celestia Astronomical Grand Complication 3600 watch, 23 astronomical complications and two dials. This project took 5 years to develop from scratch, the movement has 514 components at JUST 8.7mm! More impressive is that it has a 3 weeks power reserve (6 barrels). Perpetual calendar, age of moon, sun rise sun set, running equation of time, tide level, sun earth moon conjunction, celestial chart, Tourbillon just to name a few.  Size 45mm in 18k white gold. Unique Piece