Check the listing for details. Singer Portable Battery-Powered Bobbin Winder with Power Adapter. Condition: New. Listed at 24.99 USD. Electronic Express eBay Listing Description Singer Portable Bobbin Winder 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. Battery powered and portable ensures that you have thread with you, wherever you may go! Key Features: No Need for a Sewing Machine to Wind Your Bobbins Easy, One-Touch Bobbin Winding with Auto Shut-Off When the Bobbin is Full Portable Compact Bobbin Winder Allows You to Easily Take It Anywhere Battery-Powered For the On-The-Go Sewer. Ensures You Can Wind Bobbins at Any Time and Any Place For Use with Class 15 and 15J Bobbins (not for use with specialty HV/PF or commercial bobbins)Includes Power Adapter