Sellita SW500
Factory specs
- Caliber
- SW500
- Made in
- Switzerland
- Frequency
- 28,800 bph (4 Hz)
- Power reserve
- 62 h
- Jewels
- 25
- Hacking
- Yes
- Hand winding
- Yes
- Accuracy
- —
- Diameter
- 30 mm
- Height
- 7.9 mm
- Functions
- Hours, Minutes, Small seconds, Chronograph, Date, Day
- Clone of
- ETA Valjoux 7750
- Same family
- Sellita AMT5100 M, Sellita SW510 M, Sellita SW510, Sellita SW511 b, Sellita SW532 M
Factory grades
| Grade | Accuracy | Notes |
|---|---|---|
| Elaboré | 0 / +10 s/day | Mean rate 5 ±5 s/day, max. divergence 20 s/day, 3 positions (CH, 6H, 9H); isochronism ±15 s/day; nickel gilt balance. Often marketed as "Special". |
| Top | 0 / +8 s/day | Mean rate 4 ±4 s/day, max. divergence 15 s/day, 5 positions; isochronism ±10 s/day; Glucydur gilt balance. Often marketed as "Premium". |
| Chronomètre | -4 / +6 s/day | COSC criteria; Glucydur gilt balance |
Sellita's counterpart of the Valjoux/ETA 7750: cam-operated automatic chronograph with two pushers, small seconds at 9, 30-minute counter at 12, 12-hour counter at 6 and centre 60-second chronograph hand. Sellita technical documentation (29.03.2023): case fitting Ø30.00mm (overall Ø30.40mm), 7.90mm high, 25 jewels, 28,800 vph, power reserve minimum 56h / typical 62h, lift angle 50°, Incabloc, stop-second. Versions: "SW500 a" day-date (recorded here), "SW500 b" date only, "SW500 c" no calendar; all also come in a hand-wound "M" version (7.00mm, 21 jewels, typical 63h). Caliber Corner reports the original SW500 had 48h and that a December 2020 barrel update raised it to 62h, and that 2020 revisions also reworked the day/date driving parts.
Watches with the Sellita SW500
None in the database yet.