Function：panel to show patterns;Human-centric operation instruction;The function to automatically make button hole with one action；20 patterns installed inside;Simplified presser foot;The function to sew forward and the reverse;Knob to modify thread tension;Active arm/flat bed to alternate sewing surface;Electronic speed controller；Inner lamp to show sewing area;The function to control stitch length; The functions to attach button,to sew zipper,to make button hole,etc;Multi-language operation manual