GL-20U-A1/A2/A3/A4 is one of multi-functional computer zigzag sewing machine which created by us firstly. It is suitable for decorative seaming on thin,medium and thick fabrics of down clothes,bra, underwear, gloves, garments,shoes, caps, leather and bags etc. The machine has 190 patterns, Among them, A3 and A4 can design and load patterns by yourself.