| Subclasses | Use | Maximum speed | Seam | Video |
|---|---|---|---|---|
| WT664P-01G | Plain seaming （Covering）（Hemming） | 5,500 sti/min |
|
|
| WT664P-01N | Plain seaming | 5,500 sti/min |
|
|
| WT664P-03F | Covering | 5,500 sti/min |
|
|
| WT664P-08A | Hemming | 5,500 sti/min |
|
|
| WT664P-08B | Hemming | 5,500 sti/min |
|
|
| WT664P-08D | Hemming | 5,500 sti/min |
|
|
| WT664P-08N | Hemming | 5,500 sti/min |
|
|
| WT664P-35A | Hemming | 5,500 sti/min |
|
|
| WT664P-35B | Hemming | 5,500 sti/min |
|
|
| WT664P-35N | Hemming | 5,500 sti/min |
|
