Sellita SW330-2
Factory specs
- Caliber
- SW330-2
- Made in
- Switzerland
- Frequency
- 28,800 bph (4 Hz)
- Power reserve
- 56 h
- Jewels
- 25
- Hacking
- Yes
- Hand winding
- Yes
- Accuracy
- —
- Diameter
- 25.6 mm
- Height
- 4.1 mm
- Functions
- Hours, Minutes, Seconds, Date, GMT
- Same family
- Sellita SW331-2
Factory grades
| Grade | Accuracy | Notes |
|---|---|---|
| Elaboré | 0 / +10 s/day | Mean rate 5 ±5 s/day, max. divergence 20 s/day, 4 positions (CH, 6H, 9H, 3H); isochronism ±15 s/day. 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. Often marketed as "Premium". |
| Chronomètre | -4 / +6 s/day | COSC criteria |
SW300-based GMT with a centre 24-hour hand. Sellita technical documentation (24.05.2022): case fitting Ø25.60mm (overall Ø26.20mm), 4.10mm high, 25 jewels, 28,800 vph, power reserve minimum 50h / typical 56h, lift angle 51°, Incabloc, stop-second, ball-bearing rotor with heavy-metal segment, quick date and quick GMT setting. The extra 24h hand is set independently for a second time zone, i.e. an "office"/"caller" GMT rather than a "flyer" with a jumping local hour hand. Counterpart of the ETA 2893-2 (eta-2893-2). The -2 revision (announced 2020) reworked the GMT quick-set parts and brought the longer-running barrel; the SW330-1 had about 42h. Caliber Corner says the -1 and -2 are not fully parts-interchangeable.
