Cal. 561 copper-finished lever movement 24 jewels the silvered dial with applied baton numerals with luminous accents luminous dauphine hands sweep centre seconds window for date in circular water-resistant-type case with downturned lugs screw back centred by the raised representation of the Geneva Observatory surrounded by a starry sky 18K white gold Omega woven bracelet and deployant clasp case and movement signed by maker dial signed by maker and retailer