Zenith 4003

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Zenith 4003 is a manufacture movement by Zenith.

Automatic chronograph with perpetual calendar and moon phase. Bi-directional winding ball-bearing rotor. Further development of the calibre Zenith 410 (El Primero).

Used e.g. with the model Zenith Grande Chronomaster XXT Quantième Perpétuel.

Description:

Self-winding movement, bi-directional winding
Escapement: Stone lever
Yoke winding system
Ball-bearing central rotor in 21ct rose gold or white gold
Chronometer certificate (COSC)
Column wheel calibre
Shock protection Kif-Ultraflex
321 components

Functions:

Chronograph
Small seconds
Perpetual calendar and moon phase

Data:

13¼ lignes
D 30.0 mm, H 8.1 mm
31 jewels
36,000 A/h
Power reserve > 50h

Production period:

Since 2005