Caliber 99.1 is a manual-winding movement manufactured by D. Dornblüth & Sohn, based on the ETA 6498-1 architecture. The movement features small seconds at 6 o'clock and operates at a frequency of 2.5 Hz with a power reserve of approximately 46 hours. Dornblüth modifies the Unitas base substantially, claiming 60-75% in-house content with traditional German finishing: a 3/4 plate, swan-neck regulator, and flame-blued screws. The 99.1 is hand-finished with beveled edges and screwed gold chatons, distinguishing it from the base movement. It remains in production and serves as the core caliber within the manufacturer's 99 Series family.
Movement Type
Manual Winding
Display Type
Analog
BRAND
TYPE
Manual WindingSTATUS
In ProductionMANUFACTURE
In-houseBASED ON
ETA SA 6498.1CALIBER FAMILY
99 Series