|Caliber Number||Ronda 5021.D|
|Type||Quartz, bi-compax chronograph|
|Battery Cell Number||395|
|Battery Life||54 months|
||-10/+20 seconds per month|
|Jewels||10 (gold plated / 5 jewels (nickel plated)|
|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|
||Switzerland (Swiss made) or Unknown (Swiss parts)|
||(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.
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:
- 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.
- 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.