
| Model | JK-B781F-2S |
| Longitudo buttonholes | 6.4-19.1mm |
| Max celeritas | 3,600sti/min |
| Acus talea ictum | 34.6mm |
| Maximilianus.fibulatis opus levare | 12mm |
| Maximilianus.crassitudine consuendi | 4mm(cumtheopus fibulae deposuit) |
| Numerus suturis | 54 ~ 345 (per calces-mutationis modum) |
| acus type | DP*5 #11J |
| Lubricatio | Automatic |
| Motor | 550W |
| stiparemagnitudine | 700x370x520mm |
| Pondus (GW/NW) | 57/53kgs |