Features 1、BATTERY POWERED: 5V 15W battery soldering iron, built in 1100mAh battery, with USB interface, charge for about 2 hours, continuous operation for 40 minutes. 2、ADJUSTABLE VOLTAGE: The knob at the soldering iron bottom can adjust the voltage in both directions, with a range of 3.3-4.8V and a heat output of up to 842℉ 470℃. 3、510 THREAD INTERFACE: The soldering pen is made of stainless steel, the 510 thread interface can connect a copper alloy soldering tip and a USB charging cable. 4、EASY OPERATION: Press the switch button 5 times continuously within 2s, turn it on, the indicator light comes on, and automatically enter sleep mode within 10s. 5、APPLICABLE SCENE: This cordless soldering iron is lightweight and portable, suitable for DIY design, electronic product welding, jewelry repair, circuit board repair, etc. Specification Item Type: Soldering Iron Material: Aluminum Alloy, Stainless Steel Battery: 1 x 1100mAh 13700 Lithium Battery (built in battery) Temperature Range: 200-460℃ Heating Time: 8s-12s Soldering Tip Resistance: 1.3-2.1Ω Size: Approx. 17cm / 6.7in Package List 1 x Electric Soldering Iron 1 x USB Charging Cable 1 x Solder Wire 1 x Solder Wire Storage Box 1 x User Manual 1 x Solder Iron Frame