The SINGER® Portable Bobbin Winder is a one-touch device that allows you to wind your bobbins with ease. It is super easy to use and can be used on the go!AC Adaptor Compatibility and requires AAA Batteries (not included) AC adaptor specifications: 1: Input: 100-240VAC 50/60Hz 0.18A2: Output: 5VDC 1.0A
