Model Needle Needle number Stitich width Sewing speed Length of bar tacking Width of bar tacking Needle number of bar tacking Height of presser foot Special thread trim Special thread wipping MAX-1900K DPX5 14-16# 1 1 500-2700 40mm 30mm 20-130 >13mm √ √ MAX-1900S DPX5 14-16# 1 1 500-2700 40mm 20mm 20-130 >13mm √ √ MAX-1900H DPX17 19-21# 1 1 500-2700 40mm 20mm 20-130 >13mm √ √