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 high/medium/low temperature settings. 4. Ideal for crafts such as hand weaving, thread cutting/wiring/finishing, wax melting and carving, jewelry making, bead work, 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: 330°F-450°F Auto Sleep: 10 minutes Applicable Scenarios: Hand weaving, wire cutting/connection/finishing, wax melting and carving, jewelry making, bead work, woodboard hot stamping, and similar crafts Note: Product appearance, color, and printed text may vary slightly between batches, but this does not affect functionality. Color: Black Material: Stainless Steel Package Contents: 1 x USB Hot Wire Pen Kit Only the items listed above are included; 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 tolerance: +/- 1-3 cm.