H. Moser & Cie. HMC 341

The HMC 341 is an automatic perpetual calendar movement manufactured by H. Moser & Cie. Introduced in 2006, it remains in production as one of the brand's signature complications. The movement features a Straumann hairspring and displays date, day, month, year, and moon phase with accuracy rated to the year 2400, achieving true secular calendar functionality. It powers the Endeavour Perpetual Calendar collection and is also available in a Black Edition variant with distinctive finishing.