1. Press and hold for 5 seconds to turn the soldering iron on or off, enabling quick heating and cooling. 2. Made of high-quality stainless steel, portable, easy to operate, convenient and practical. 3. Fast heating with selectable high, medium, and low temperature settings. 4. Suitable for crafts such as hand weaving, cutting or connecting threads, wax melting and carving, jewelry making, woodboard hot stamping, and similar applications. 5. Features auto sleep mode after 10 minutes of inactivity. Product Name: USB Hot Wire Pen (with Cover) Suggested charging voltage: 5V Operating voltage: 2.7V-3.4V-4.2V (adjustable) Battery capacity: 650mAh Charging time: 60 minutes Usage time: 30 minutes Working temperature range: 330°F-450°F Auto sleep: 10 minutes Applicable scenarios: Hand weaving, thread cutting/joining/finishing, wax melting and carving, bead jewelry, woodboard hot stamping, etc. Note: Product appearance, color, and printed text may vary slightly between batches, but this does not affect functionality. Color: Red Material: Stainless steel Package Contents: 1 x USB Hot Wire Pen Kit Note: The package includes only the items listed above; other accessories are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3 cm.