Stitch clothes in a jiffy with the Singer 8770 Curvy twin needle sewing machine. This Singer sewing machine features the SwiftSmart digital threading method that uses a one-touch needle threader, thus reducing threading time consumption. Explore wide stitching designs with this twin needle sewing machine as it has 225 built-in stitching patterns including alphanumeric patterns. The Singer 8770 Curvy sewing machine has twin needle ability that allows you to use two different colored threads at a time. The Drop and Sew Bobbin system is a uniquely-designed thread jack in this Singer sewing machine that ensures no manual effort while raising the bobbin thread.