Enhance your sewing experience with this versatile Automatic Bobbin Winder, designed for both household and general use. Crafted from durable plastic and stainless steel, this compact and lightweight bobbin winder offers reliable performance with convenient dual power supply options. Whether powered by 3 AA batteries (not included) or a USB Type-C charging cable, it ensures flexibility and ease of use in various settings. Key Features: · Wide Compatibility: Features an improved thread holder design compatible with both small and large bobbins, including special bobbins, ensuring stable winding with minimal noise. · Dual Power Supply: Operates on either 3 x 1.5V AA batteries or via a Type-C charging cable, providing versatile power options to suit your needs. · Photoelectric Induction Control: Utilizes advanced photoelectric induction technology to precisely control the bobbin winding amount, delivering accurate and efficient winding every time. · Adjustable Thread Clamping Knob: Allows you to customize the looseness or tightness according to different types of sewing threads, promoting smooth and consistent bobbin winding. · Practical Storage and Protection: Equipped with two extra bobbin organizer posts to hold up to 4 bobbins, while the included dust cover protects the device from dust and dirt. Felt pads are integrated to reduce bobbin noise during operation. · Compact and Portable: Measuring approximately 10 x 14 x 8 cm (3.9 x 5.5 x 3.1 inches) when closed, this bobbin winder is easy to store and transport, making it ideal for most sewing environments. Specifications: · Item Type: Automatic Bobbin Winder · Material: Plastic, Stainless Steel · Color: White · Power Supply: 3 x AA Batteries (not included) or USB Type-C charging cable · Size (Closed): Approx. 10 x 14 x 8 cm / 3.9 x 5.5 x 3.1 inches · Package Includes: 1 Piece Automatic Bobbin Winder This Automatic Bobbin Winder combines precision, convenience, and durability, making it an essential tool for sewing enthusiasts seeking efficient and quiet bobbin winding with enhanced thread control and storage options.