Main Features: *Minimized multi-speed drop range The multi-speed drop range is shortened to enhance the stitching quality in speed change. (When the stitching length exceeds 5.5 mm, drop-speed decreases by 10 rpm per 0.1 mm). *Enhanced reliability by upgrading I/O Board *Adopting new type of color change box. *Improved embroidery quality: Optimizing X-Y motion and improving upper thread way.