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This is a genuine Ronda 507 date wheel, an original Swiss-made component for the Ronda 507 multifunction quartz movement. It serves as the core component of the day/date display mechanism, responsible for automatically advancing both the date and day numerals at midnight. The Ronda 507 date wheel features a 3 o’clock layout (date + day) and is available in white or black color variants. This product is brand new and original, not a generic replacement part.
Brand：Ronda (Swiss)
Compatible Movement：507 quartz movement (10½ ligne xtratech series)
Part Name：Date Wheel / Day-Date Wheel
Origin：Swiss Made (1 jewel, nickel) or Swiss Parts (1 jewel, nickel)
Quality：Genuine original, brand new
Function：Drives date and day display
1. Is this date wheel an original Ronda genuine part?
Yes. It is an original Ronda factory part, Swiss Made.
2. Which movements is this date wheel compatible with?
It fits the Ronda 507 series quartz movement, measuring 10½ ligne (approx. 23.70mm) with 3.00mm thickness, featuring date + day display. The 507 is part of Ronda’s xtratech product line, with the calendar at the 3 o’clock position (date and day side-by-side).
3. What happens if the date wheel is damaged?
The date wheel is the core component of the day/date display mechanism. Damage can cause the date to fail to advance, skip, or jam, affecting the day/date function. As a wear-prone component, timely replacement is recommended.
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