The Breguet Classique Grande Complication 7639 is a unique watch in every sense. The watch uses the Breguet Caliber 567/2 manually wound movement forty hour power reserve with a minute repeater which chimes the minutes at the press of a button. Breguet consulted with leading sound-system specialists in order to make the sound pure though the use of diamond conduction. The dial is paved with three hundred and ninety two princess cut diamonds set upside down so that they appear not to be set. The case is made of eighteen carat white gold and set with one hundred and seventy eight baguette cut diamonds whilst the clasp is set with forty two baguette cut diamonds.