1. Press and hold for 5 seconds to power on or off. The soldering iron heats up and cools down quickly. 2. Made of high-quality stainless steel, lightweight and portable, easy to operate and practical. 3. Digital battery level display for convenient welding operation. 4. Fast heating with high/medium/low temperature settings. 5. Suitable for hand weaving, wire cutting/connection/finishing, wax melting and carving, jewelry making, wooden board hot stamping, and similar applications. Auto sleep mode activates after 10 minutes of inactivity. Product Name: USB Hot Wire Pen (with Cover) Suggested charging voltage: 5V Voltage range: 2.7V–3.4V–4.2V (adjustable) Battery capacity: 650 mAh Charging time: 60 minutes Operating time: 30 minutes Working temperature: 330°C–450°C Auto sleep time: 10 minutes Applicable uses: Hand weaving, wire cutting/connection/finishing, wax melting and carving, jewelry making, wooden board hot stamping, etc. Product appearance, color, and printed text may vary slightly between batches; this does not affect functionality. Color: Black Material: Stainless steel Package Contents: 1 x USB Hot Wire Pen 1 x Hot Wire Head 1 x Cover 1 x Charging Cable Note: Color representation may vary due to lighting and screen settings. Measurement tolerance: ±1–3 cm.