The case is in grade 5 titanium, that can be mirror polished; in 44mm. The movement for the MB&F LM Perpetual Titanium was developed in-house as an integrated perpetual calendar by Stephen McDonnell. The manual wound movement composed of 581 parts, is composed of double mainspring barrels, unique 14 mm balance wheel with traditional regulating screws visible on top of the movement, internal bevel angles, Geneva stripes, 41 jewels and handmade engravings. The movement has a frequency of 18,000 vph, with a 3-day power reserve. Limited to 50 pieces. Priced at US$148,000.00