enay
Moderador


Technical specifications - Tonda Annual Calendar
Model: Tonda Retrograde Annual Calendar
Movement: PF 339, self-winding Retrograde Annual Calendar (one correction per year in February, except for leap years).
Functions:
Hour, minute, seconds
Date
Day
Month
Precision moon phase (one correction every 120 years).
Exterior:
3-part round case: ∅ 40 mm. Thickness: 11.2 mm.
Material: 150 PD white gold or 18 ct rose gold. Polished finish.
Water resistance: 30 m. Anti-reflective sapphire crystal.
Crown: Ø 6 mm.
Case-back with sapphire crystal.
Individual number engraved on the case-back.
Dials:
2 variants: "Yellow silvered graining" and "Black barley grain".
Opaline outer, spindle-shaped applique indexes,
Delta-shaped hands with luminous coating.
Leather: Hermès alligator with 18 ct ardillon buckle, polished finish.