Function：Four-step buttonholing; Adjustable pressure; 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；lectronic speed-controller;The built-in light makes the sewing area bright; Controllable stitch length；With accessories for sewing zipper,darning, button attaching, and buttohole; Multilingual instruction manual