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 typesewing 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 buttoholing; Multilingual instruction manual