The b77 focuses exclusively on sewing and quilting. It has 9 inches (230 mm) of space to the thing of the needle for creative projects, and four LEDs provide bright illumination of sewing area. A total of 500 stitches are available to choose from, including 22 utility stitches, 133 decorative stitches, 3 alphabets, 35 quilting stitches, and 15 buttonholes. The maximum stitch width is 7 mm and the maximum stitch length is 5 mm. As well as practical functions, such as the speed regulator and needle stop up/down, the b77 also features a needle threader and an automatic thread cutter. Eight presser foot soles and a large extension table are included.