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, and convenient for practical use. 3. Fast heating with selectable high, medium, and low temperature settings. 4. Ideal for crafts such as hand weaving, cutting or connecting threads, wax melting, carving, jewelry making, bead work, and wood hot stamping. 5. Features auto sleep mode after 10 minutes of inactivity. Product Name: USB Hot Wire Pen (with Cover) Recommended charging voltage: 5V Operating voltage: 2.7V–3.4V–4.2V (adjustable) Battery capacity: 650mAh Charging time: approximately 60 minutes Usage time: up to 30 minutes Working temperature range: 330°F–450°F Auto sleep: 10 minutes Applicable uses: Handicrafts, thread cutting/joining/finishing, wax melting, carving, jewelry, bead work, wood 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: Other items not included. Note: Lighting and monitor differences may cause slight color variations. Measurement error allowed: ±1–3 cm.