Seiko VK64 (SII) caliber vs Sellita SW215-1 caliber: specs compared
Updated 05 September 2026.
11
specs differ
Seiko VK64 (SII) caliber and Sellita SW215-1 caliber differ on 11 specs: maker, size, casing diameter, movement height, frequency, jewels.
| Spec | Seiko VK64 (SII) caliber | Sellita SW215-1 caliber |
|---|---|---|
| Maker | Seiko Instruments / SII | Sellita |
| Size | 13 1/2 ligne | 11 1/2 ligne |
| Casing diameter | 30.80 mm | 25.60 mm |
| Movement height | 5.10 mm | 3.35 mm |
| Frequency | 32,768 Hz quartz | 28,800 A/h (4 Hz) |
| Jewels | 0 | 19 |
| Winding | quartz, battery 394 (SR936SW) | manual |
| Calendar / layout | meca-quartz bicompax chronograph, two sub-dials, date | centre seconds, date at 3 |
| Hand fitting | chronograph, sub-dial and centre hands | hour 1.50 / minute 0.90 / second 0.25 mm (bore) |
| Stem | VK-series stem | 401.1029 |
| Power reserve | battery, up to 3 years | approx. 42 h |
Questions and answers
How do Seiko VK64 (SII) caliber and Sellita SW215-1 caliber compare?
Seiko VK64 (SII) caliber and Sellita SW215-1 caliber differ on 11 specs: maker, size, casing diameter, movement height, frequency, jewels.