Function：Four-step buttonholing; 20 built-in stitch patterns; Adjustable pressure; Up and down feed dog; Simplified presser foot; Forward and backward sewing; Adjustable knob for thread tension; With the free-arm design；flat bed sewing and cylinder type sewing both available; Electronic speed-controller; The built-in light makes the sewing area bright; Controllable stitch length；With accessories for sewing zipper, darning, button attaching, and buttonhole; Multilingual instruction manual