Ronda 513S

The Ronda 513S is a Swiss-made quartz movement that serves as an updated version of the caliber 513, featuring a motor pulse fix. It belongs to Ronda's Powertech line and is considered repairable. The movement uses a single jewel and a cell371 battery delivering approximately 24 months of power reserve. A hacking seconds function stops the second hand when the crown is pulled out, reducing power consumption by about 70%. Accuracy is specified at ±20 seconds per month.