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Technical information calibre J830.5
Mechanical movement with display for date and power reserve
Bi-directional automatic winding mechanism with ball bearing
Finishing: ”Côtes de Genève” finishing on bridges and rotor, blued
screws
34 jewels
28,800 vibrations per hour
Power reserve > 48 hours
Anti-magnetic as per DIN 8309
Spring: Flat spring
Balance wheel: Nickel plated
Содержание J830.5
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