Self-winding movement with a Co-Axial escapement. Central hour and minute hands. Time zone function. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, two barrels mounted in series, automatic winding in both directions. Special luxury finish with rhodium-plated rotor and bridges with Geneva waves in arabesque, featuring an engraved Constellation Observatory motif.