In 2002, Jaeger-LeCoultre launched the Master Compressors collection, designed by Ms. Magali Metrailler. The collection drew inspiration from the 1960's Memovox 'Polaris' and featured a signature crown-locking mechanism. One of the models, the Master Compressor Dualmatic reference 1738470, hit the market in 2004 as a more budget-friendly option. It runs on the self-winding caliber 972 and has a second time zone function. Unfortunately, it was discontinued in 2007.