Save time and stay organized with the SINGER Portable Bobbin Winder. The one-touch auto winding is paired with an auto shut off that stops when the bobbin is full. Portable and powered by cord, or battery, ensures that you have thread with you, wherever you may go! 120V Power Adaptor Included Battery power requires 3 "AA" batteries (not included). COMPACT PORTABLE DESIGN The SINGER Portable Bobbin Winder is a lightweight, compact tool, perfect for winding bobbins on the go. Whether youre at home, attending sewing classes, or traveling, this portable winder offers a quick and convenient solution for ensuring you always have bobbins ready. EASY TO USE WITH AUTOMATIC SHUTOFF Designed for convenience, the SINGER Portable Bobbin Winder features automatic shutoff when the bobbin is full, preventing overfilling. This userfriendly design ensures smooth, precise bobbin winding without requiring constant monitoring, making it hasslefree for sewers of all skill levels. COMPATIBLE WITH CLASS 15 15J BOBBINS The SINGER Portable Bobbin Winder is compatible with Class 15 and 15J bobbins, making it a versatile tool for various sewing machines. Whether youre preparing for a big project or need a quick refill, this winder ensures you have perfectly wound bobbins every time. NO SEWING MACHINE REQUIRED Save time and multitask with the SINGER Portable Bobbin Winder, which works independently of your sewing machine. No need to stop your sewing projectssimply wind bobbins separately while continuing your work, offering greater efficiency and convenience. BATTERY OR ACPOWERED FLEXIBILITY Enjoy the convenience of dual power options with the SINGER Portable Bobbin Winder. Powered by batteries or an AC adapter, this winder provides flexibility for both home use and travel, ensuring you can quickly wind bobbins wherever you are, without interruption.