| Brand | Ronda |
| Caliber Number | Ronda 5021.D |
| Type | Quartz, bi-compax chronograph |
| Lignes | 12.5”’ |
| Diameter |
28.6mm |
| Height | 4.4mm thick |
| Battery Cell Number | 395 |
| Battery Life | 54 months |
| Frequency |
32,768 Hz |
| Accuracy |
-10/+20 seconds per month |
| Jewels | 10 (gold plated / 5 jewels (nickel plated) |
| Hacking? | Yes |
| Functions | Central hours; central minutes; central chronograph stopwatch seconds; small running seconds subdial at 3:00; 3o minutes chronograph counter at 9:00; date at 6:00 |
| Country |
Switzerland (Swiss made) or Unknown (Swiss parts) |
| Known Models |
(Add your watch to the comments below…) |
The Ronda caliber 5021.D is a bi-compax style (two horizontal subdials) quartz chronograph watch movement.
In Ronda’s own words (source):
- Very long battery life
- Repairable metal watch movement
- Power saving mechanism with pulled out stem: Reduction of consumption approximately 70%
- Very easy handling by two pushers
Some of the topics covered in this caliber listing:
Two Versions of 5021.D:
According to the Ronda website, there are two versions of this movement: a Swiss parts version with 5 jewels and nickel plated finish (silver), and a Swiss made 10 jewels version with gold plated finish.
Resetting the chronograph to 12:00:
If the chrono hand on your Ronda powered watch isn’t lining up, try the instructions in the video below.
Replacement Prices:
At the time of this post, replacement prices for the 5021.D were found online in the range of $35.95 to $64.95 USD. There is a difference in price based on whether you choose the Swiss made or Swiss parts version.
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:
network of watch sites
