MB&F caliber LM Perpetual

Ref. LM Perpetual

The MB&F caliber LM Perpetual is a handwound movement with a 72-hour power reserve, beats at 18,000 vph, and carries 41 jewels.

Fully integrated perpetual calendar developed for MB&F by Stephen McDonnell, featuring dial-side complication and mechanical processor system architecture with inbuilt safety mechanism. Manual winding with double mainspring barrels. Bespoke 14mm balance wheel with traditional regulating screws visible on top of the movement. Superlative hand finishing throughout respecting 19th century style: internal bevel angles highlighting hand craft; polished bevels; Geneva waves; hand-made engravings. Power reserve: 72 hours Balance frequency: 18,000bph / 2.5Hz Number of components: 581 Number of jewels: 41

Type: Handwound
Display: Analog
Power reserve: 72 h
Frequency: 18000 vph
Jewels: 41
Complications: Date, Day, Hours, Leap Year, Minutes, Month, Power Reserve Indicator