Ronda Caliber 5040.D

Ronda caliber 5040.D is a Swiss made quartz chronograph watch movement found in many luxury and microbrand watches.

Different Finishes, Jewel Counts:

According to the Ronda website, there are two versions of this movement: 13 jewel version with gold plated finish (pictured at the top of this page), and a nickel (silver tone) version with 6 jewels (pictured below).

Power Saving Feature:

The battery is claimed to last about 54 months in normal conditions, but if you are not going to wear your watch for a while, the 5040.D has a power saving mechanism when the stem is pulled out stem (aka hacking function). Reduction of battery consumption approximately 70%. It is not advisable to leave the chronograph second hand running because it will drain the battery faster and put more wear and tear on the gears.

How to rest the chronograph hand to zero:

If your chronograph hand isn’t lining up after a battery chance, it might need to be reset.

Macro Gallery:

The Ronda 5040.D pictured here was found in this TAG Heuer Formula 1 chronograph watch. The white plastic movement holder on the TAG has screws holding it in, but other watch companies do not always use the screws (Invicta for example).

Examples of watches with this caliber:

Pros and Cons:

Pros

• Affordable option for the trendy bi-compax chronograph layout.
• Decent battery life
• Easy to reset the hands to zero.
• Drawings and tech sheets are readily available.
• Parts are easy to identify and fairly easy to source.

Cons

• The battery clamp and screw are prone to flying away and getting lost during a battery change.
• The battery cell needs an orange insulator tab beneath it.
• Swiss made/Swiss parts offerings allow some watch brands to be ambiguous or misleading about the origin.

Additional Resources:

• Ronda 5040.D tech sheets/drawings (pdf)