Ronda Caliber 5030.D

The Ronda caliber 5030.D is a Swiss made quartz chronograph watch movement found in many luxury and microbrand watches. It is part of Ronda’s Startech line of movements and is considered to be a repairable movement.

Swiss Made VS Swiss Parts:

According to Ronda, there are two versions of this movement: a gold plated Swiss Made version and nickel plated Swiss parts version. The Swiss Made version has 13 jewels and the Swiss Parts has 6 jewels. You can see some of the jewels 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 5030.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.

Changing the Battery:

The wishbone or Y clamp has two prongs that are held into the case on one end and is held down by one screw on the other end. Be very careful when removing the screw because the clamp basically becomes a spring when it is loose and will catapult the screw across the room! The screw is very tiny and will be difficult to find. You can use a finger cot to hold the battery and clamp in place while removing the screw, or a piece of Rodico to hold it in place.

Video – Resetting the Chronograph to Zero:

After changing the battery, your chronograph seconds hand or subdial totalizers may not be not lined up to zero. You can use the following sequence to get everything lined up.

Instructions

1. Pull the crown out two clicks to time setting position (position III).
2. Press button A (top chrono button) and B (bottom chrono button) together for at least 2 seconds.
3. The chronograph seconds hand will spin around one full turn, this is how to know you’re in correction mode.
4. Press button A to advance the main chrono hand forward until it gets lined up. Long press to make it advance faster, short press for one second intervals.
5. Press button B to go to the next hand.
6. Press button A until the hand is lined up.
7. Press button B to advance to the next hand.
8. Press button A until the hand is lined up.
9. Press the crown back in to position I.

Note: In the unlikely situation that the hands still won’t line up, or if they are moving around, there is a chance the hands are loose and need pressed back on.

Stem Removal

To remove the crown/stem, find the hole with the arrow. While the crown is in position 0, pressing this with your tweezers or other tool will allow the stem be unlocked so you can pull it out. Do not press too hard.

Replacement Price:

At the time of this post, replacement prices were found online at $27.95 for the Swiss Parts version and around $34.95-36.95 for the Swiss Made version.

Additional Resources:

• Official 5030.D datasheet
• Official 5030.D tech sheets