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.