Welcome to our store! 1. RECHARGEABLE Cordless Soldering Iron: This 5V 15W battery-powered soldering iron comes with a built-in 1100mAh battery. To charge the cordless soldering iron, simply connect the USB port to a computer, power bank, or phone charger. It takes about 2 hours to fully charge and provides 40 minutes of continuous work. 2. ADJUSTABLE VOLTAGE: The soldering iron features a knob on the bottom that allows for voltage adjustment in both directions. The voltage can be adjusted within the range of 3.3V-4.8V, and the heat can reach up to 842℉ or 470℃. By pressing and holding the power switch for 8 seconds, the iron heats up quickly, and this operation can be repeated for continuous heating. 3. 510 INTERFACE: The soldering iron pen is made of alloy and has a 510 interface that can be connected to copper alloy soldering iron tips and the USB soldering iron charging cable. 4. SAFETY PROTECTION: To turn on the soldering iron, press the switch button 5 times continuously within 2 seconds, and the indicator light will turn on. The soldering iron automatically enters sleep mode if there is no operating command within 10 seconds. 5. PORTABLE AND VERSATILE: This cordless charging soldering tool is lightweight and easy to carry, making it suitable for DIY design, electronics soldering, jewelry repair, electrical accessories, circuit board repair, and more. Specification: - Item Type: USB Soldering Iron - Material: Copper Alloy, Stainless Steel - Temperature Range: 200℃-470℃ - Heating Time: 8s-12s - Soldering Iron Tip Resistance: 1.5-2.5Ω - Battery: 1 x 13700 Lithium Battery, Battery Capacity: 1100mAh Package List: - 1 x Soldering Iron - 1 x USB Charging Cable - 1 x Soldering Iron Tip - 1 x Cover - 1 x User Manual - 1 x Soldering Iron Stand Please allow minor errors due to manual measurement and different monitors. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory after-sales service. Thank you for choosing our store. We hope this information is helpful to you. Wish you a happy life.