Say good-bye to the days of having to unthread your sewing machine in the middle of a project, just to wind a bobbin. Meet the customer-inspired SINGER® Portable Bobbin Winder. This sewing game changer is an external bobbin winder that quickly and easily fills bobbins with thread. It keeps you from having to unthread your sewing machine to fill a bobbin, then re-thread the machine again! With the one-touch auto winding system, bobbins are filled quickly and easily. It also includes two spindles for additional bobbin storage. Either use the included power cord or 3 AA batteries. Whether you need to wind a bobbin that's low on thread or change your bobbin thread color in a jiffy, the SINGER Portable Bobbin Winder is your go-to bobbin-filling partner! Details: White 3.9" x 2.95" x 5.5" With the one-touch auto winding system, bobbins are filled quickly and easily Easy set-up with thread guides will have you winding a bobbin within seconds Conveniently housed within a compact and portable case, making it easy to store, use at home, or on-the-go! Includes two spindles for extra bobbin storage and 120V power adaptor Battery-powered for the on-the-go sewist. Ensures you can wind bobbins at any time or place Requires 3 AA batteries (sold separately) For use with Class 15 and 15J Bobbins (not for use with specialty or commercial bobbins)