Yosoo Automatic bobbin winder with photoelectric induction and dual power

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• [VERSATILE BOBBIN COMPATIBILITY] Our automatic bobbin winder features an upgraded thread holder design that accommodates both small and large bobbins, including special bobbin types. This ensures a stable winding process with significantly reduced noise, making it perfect for various sewing projects and providing a quieter, more pleasant sewing experience.
• [DUAL POWER SOURCE FLEXIBILITY] Enjoy the convenience of two power options: use 3 AA batteries (not included) for cordless operation anywhere, or plug directly into a USB Type C port with a phone charging cable. This dual power supply ensures uninterrupted use, whether you are at home or on the go.
• [PRECISE PHOTOELECTRIC CONTROL] Utilizing advanced photoelectric induction technology, this winder automatically controls the amount of thread wound onto the bobbin with high precision. This prevents overfilling and ensures consistent, even winding every time, saving you time and reducing thread waste.
• [ADJUSTABLE THREAD TENSION] Easily adjust the thread clamping knob to suit different types of sewing threads, from fine silk to thick cotton. This feature allows you to customize the winding tightness, resulting in a regular, smooth, and -free bobbin that enhances your sewing machine's performance.
• [INTEGRATED STORAGE AND PROTECTION] The included two extra bobbin organizer posts allow you to store up to 4 bobbins neatly. A dedicated dust cover protects the unit from dirt and debris, while felt pads under the base minimize vibration and noise, keeping your clean and organized.