A&S5201 – Open-worked Black Edition
Like all the movements used by Arnold & Son, the A&S5201 calibre has been entirely developed, manufactured, decorated, assembled, adjusted and cased-up at the Manufacture in La Chaux-de-Fonds. This calibre draws on a pair of large barrels and an oscillating frequency of 3 Hz, which delivers a 90-hour power reserve. In addition, its depth of 4.18 mm is exceptional for a skeletonised movement, as these types of calibres usually retain a certain thickness to compensate for their open-worked designs, which typically weaken their structures.
- Diameter
- 31.10 mm
- Height
- 4.18 mm
- Jewels
- 24
- Power Reserve
- 90h
- Frequency
- 3 Hz / 21,600 vph
