Convenient for small diameter circular material sewing
More independent loose wire electromagnet design
More stable sewing thread tension / sewing stable / beautiful stitch

Reduce thread trimming failure and reduce the load of thread trimming electromagnet
New sewing machine upper shaft and spindle meter coaxial drive, no coupling
New intelligent design of stepping one for two

A stepping motor controls reverse stitching, stitch length, lifting the presser foot, pattern sewing with multiple stitches.
The stitches length control is more precise
The presser foot is driven silently