The Case Back
The case back is designed in the style of a ships port window which is fitted with a double curved sapphire crystal with three layers of anti-reflective coating through which the Swiss made movement with its bell diving helmet rotor. The modified 11 ½ ligne calibre VB - 24A automatic movement features 26 jewels, perlage and blued screws. Other highlights include a Glucydur balance, an Anachron balance spring and a Nivaflex 1 mainspring. The balance has a frequency of 28,800 bph and features a 38-hour power reserve and a skeletonised, decorated rotor. The movement is suspended in a ring of mu-metal which helps protect it from excessive magnetic forces.