Created in 1972 and produced in a total quantity of only 15,000 pieces, the Omega Constellation Time Computer I - ref. GD 396.0812 -  has a 14kt filled case with a red LED display with ruby-colored mineral glass chosen for its filtering quality to allow the numbers to stand out more clearly.  This version displays the time with a push of its single button. The watch has its original gold plated bracelet along with the magnet used for setting.  The digital quartz electronic movement is running and keeping time and has fresh batteries.