
The HMC 341 Perpetual Calendar calibre features a flash date and month indicator, allowing for bidirectional adjustment at any time. This in-house movement includes a perpetual calendar, power reserve and leap year indicators, hacking seconds, double barrels, and gold screwed mounts. It is finished with Moser gear teeth, an interchangeable escapement, a Straumann Hairspring® with a Breguet overcoil, and gold pallet fork and escapement wheel.