Sellita SW511 a
Factory specs
- Caliber
- SW511 a
- Made in
- Switzerland
- Frequency
- 28,800 bph (4 Hz)
- Power reserve
- 62 h
- Jewels
- 27
- Hacking
- Yes
- Hand winding
- Yes
- Accuracy
- —
- Diameter
- 30 mm
- Height
- 7.9 mm
- Functions
- Hours, Minutes, Small seconds, Date, Chronograph
Automatic, cam-operated two-pusher chronograph of the SW510 family with a 15-minute counter and a date. Sellita's 2026-2027 catalogue says the 15-minute counter is "available for all versions of the SW510" and that SW510 versions fitted with it are called SW511; this is the base SW510 a (small seconds at 9, centre 60-second chronograph hand, 12-hour counter at 6, date with quick setting) with the 15-minute counter at 3 in place of the 30-minute counter. The catalogue prints only the SW511 b (no date), SW511 BH a and SW511 MPC b as separate entries; the "a" name for the dated three-counter version follows Sellita's a = date / b = no date convention (SW510 a / SW510 b). Figures from the catalogue's SW511 entries and the SW510 technical documentation: 13¼ lignes, casing Ø30.00mm (overall Ø30.40mm), 7.90mm high, 27 jewels, 28,800 vph, typical power reserve 62h, ball-bearing rotor, stop-second. See sellita-sw511-b (no date) and sellita-sw510 (30-minute counter).
Watches with the Sellita SW511 a
| Watch | Price from | Movement | Dia. mm | Thick mm | Crystal | Micro-adjust |
|---|---|---|---|---|---|---|
 Calamai G50V |
$3,929 | Sellita SW511 a | 40 | 14.2 | Sapphire | — |