“I do not sew so I look this machine up under the Singer and this is there description of the 4423 Heavy Duty sewing machine”. The Singer 4423 Heavy Duty sewing machine is a mechanical sewing machine with a modern design. It offers easy operation, 23 types of stitches, automatic buttonhole. It is especially suitable for beginner tailors. Main functions for the Singer 4423 Heavy Duty sewing machine:23 types of stitches (6 basic, 11 decorative, 5 elastic plus 1 step buttonhole) Possibility of double sewing Reverse for sewing Adjustable needle (3 positions)Continuous stitch length adjustment max. It is Portable and Fully Automatic.