Ronda 3540-D

The Ronda 3540-D is a Swiss-made quartz chronograph movement with subdials at 6, 9, and 12 o'clock. It operates within -10 to +20 seconds per month accuracy and uses a 384 battery that lasts approximately 54 months under normal conditions. A distinctive characteristic is its use of a plastic movement holder to control the chronograph pushers—the chronograph function cannot be engaged without this holder installed. The movement is considered repairable by Ronda and is based on the 3520.D caliber.