Ronda 1005 caliber vs Ronda 505 caliber: specs compared
Updated 05 September 2026.
8
specs differ
Ronda 1005 caliber and Ronda 505 caliber differ on 8 specs: size, casing diameter, movement height, jewels, winding, calendar / layout.
| Spec | Ronda 1005 caliber | Ronda 505 caliber |
|---|---|---|
| Maker | Ronda | Ronda |
| Size | 10 1/2 ligne | 11 1/2 ligne |
| Casing diameter | 23.30 mm | 25.60 mm |
| Movement height | 2.50 mm | 3.10 mm |
| Frequency | 32,768 Hz quartz | 32,768 Hz quartz |
| Jewels | 1 or 5 | 1 |
| Winding | quartz, battery 371 | quartz, battery 371 (SR920SW) |
| Calendar / layout | centre seconds, date at 3 | centre seconds, date at 3, small seconds sub-variant |
| Hand fitting | hour 1.50 / minute 0.90 / second 0.20 mm (bore) | hour 1.50 / minute 0.90 / second 0.20 mm (bore) |
| Stem | Ronda 1000-series stem | Ronda 500-series stem |
| Power reserve | battery 371, up to 50 months | battery 371, up to 45 months |
Questions and answers
How do Ronda 1005 caliber and Ronda 505 caliber compare?
Ronda 1005 caliber and Ronda 505 caliber differ on 8 specs: size, casing diameter, movement height, jewels, winding, calendar / layout.