| Model | UN-311G | UN-326G | UN-342G |
| Working area | 130mmx100mm | 220mmx100mm | 300mmx200mm |
| Stitch pattern | Single-needle flat seam | ||
| Maximum sewing speed | 2700rpm | ||
| Needle pitch | 0.05-12.7mm | ||
| Maximum gauge | 20,000 needles(including increased 20,000 needles) | ||
| Presser lifting Amount | Maximum 30mm | ||
| Rotating shuttle | Double rotating shuttle | ||
| Data storage Mode | USB memory card | ||
| Motor | AC servo motor 550W | ||
| Power | Single-phase 220V | ||
| Packing size | 1220x820x1280mm | 1220x840x1320mm | 1220x1080x1330mm |
| Weight(G.W/N.W) | 160/120kgs | 183/139kgs | 244/206kgs |