Manufacturer | Ronda |
Caliber Number | 505 |
Movement Type | Quartz, battery-powered |
Lignes | 10.5”’ |
Total Diameter | 23.9mm |
Casing Diameter | 23.3mm |
Height | 3mm |
Jewel Count | 1 |
Frequency | 32,768 Hz |
Accuracy Rating | -10 ~ +20 seconds/month |
Battery Cell | 371 |
Battery Life | 45 months |
Hand Count | 3 |
Functions | Central hours; central minutes; central seconds; date at 3:00 (also possible at 4:00, 4:30, or 6:00) |
Hacking Seconds? | Yes |
Country of Manufacture | Swiss made or Swiss parts |
Known Models | (Add your watch to the comments below…) |
The Ronda caliber 505 is a 3-hander quartz movement with a date. Ronda markets this calibre as a repairable movement with a very powerful stepping motor.
Swiss Made VS Swiss Parts:
Unlike many other Ronda movements, there is no way to visually determine the country of origin by a quick glance of the color or jewel count. Both the Swiss Made and Swiss Parts versions are nickel plated (silver tone) with 1 jewel. To figure out which version is in your watch, you will have to look for the country of origin text on the movement itself.
Ronda 505 VS 505S:
There is a similar caliber 505S with the main difference being that the seconds on the 505S is displayed as a disc. If you have seen an example of this, please comment below.
Additional Resources:
Recent Comments
Yes
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I have an Endura dive watch. SWISS UNADJUSTED ONE 1 JEWEL 8810 movement.
Thank you for the information.
This caliber is also found on the Tactical Frog Solar Chronograph.