Operation Manual

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Technical information calibre J890
Mechanical movement with date and power reserve indicator,
Chronoscope with stop second, stop minute and stop hour
Bi-directional automatic ratchet winding mechanism
Finishing: ”Côtes de Genève“ finishing on bridges and rotor,
blued screws
41 jewels
28,800 vibrations per hour
Power reserve > 48 hours (without chronoscope function)
Anti-magnetic as per DIN 8309
Spring: Flat spring