52 stitch functions, 27 built-in stitches and a One-step Auto-Size automatic buttonholer with stitch balance control which ensures equal stitch density on both sides of the buttonhole. This machine also boast Dial Thread Tension Control, Electronic Speed Control, Variable Needle Position and Twin Needles for Decorative sewing. This is a versatile machine that will be enjoyed by both the serging & quilting enthusiast.