Ronda 5040-B-VS-5040-D

Ronda caliber 5040 is a quartz movement with two variants: the 5040.B and 5040.D share identical specifications, differing only in calendar display—the 5040.B features a big date window while the 5040.D shows a standard date. Both operate with quartz precision powered by a battery. The movements appear visually identical from the case back, distinguished only by the B or D suffix in the caliber designation. This caliber is used by various watch brands requiring a reliable quartz movement with date functionality.