Piaget caliber 850P

Manufacture Piaget 850P self-winding mechanical movement with small seconds, date and dual time zone. Type: Self-winding mechanical Shape: Round Functions: Small seconds at 4 o'clock, Second time zone at 8 o'clock (12 hours), Day/night indicator at 8 o'clock synchronised with the main time zone, Date at 12 o'clock, Hours, Minutes Technical features: Balance with screws, Double barrel Power reserve (in hours): Approx. 85 Frequency (vph): 21,600 Frequency (Hz): 3 Diameter (lines): 12.00 Diameter (mm): 26.8 Number of jewels: 30 Thickness (mm): 4 Number of components: 229 Finishing: Oscillating weight engraved with the Piaget coat of arms, Blued screws, Circular Côtes de Genève, Circular-grained mainplate, Bevelled bridges