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This is a genuine Ronda 6004 coil block, a Swiss-made component for the Ronda 6004.B and 6004.D quartz movements. It serves as the core drive component of the stepper motor, converting electrical pulses from the circuit board into magnetic force to drive the gear train for precise timekeeping. This product is brand new and original, intended for servicing and repair of 6004 movements.
Brand：Ronda (Swiss)
Compatible Movements：6004.B / 6004.D quartz calibers
Part Name：Coil Block (Spulenblock)
Origin：Made in Switzerland
Quality：Genuine original, brand new
Function：Converts electrical pulses to magnetic force to drive stepper motor
Coil Resistance：1.61–1.81 kΩ
1. Is this coil block an original Ronda genuine part?
Yes. It is an original Ronda factory part from Switzerland, designed for 6004.B and 6004.D movements.
2. Which movements is this coil block compatible with?
It fits Ronda 6004.B and 6004.D quartz movements. The 6004 series measures 11½ ligne (Ø26.0mm) and features big date display and small seconds at 6 o’clock.
3. What are the symptoms of coil block failure?
The coil block is the core drive component of the stepper motor. Common symptoms include: movement not running after battery replacement, noticeable time gain/loss, or intermittent stoppage. Timely replacement is recommended.
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