NAMEO Professional Portable USB Powered Soldering Iron Pen 5V 8W with LED Indicator for DIY Soldering Welding Jobs Fully Functioning USB 8W Powered Soldering Iron. USB 5V Powered Design. Small and Compact for Portability. With LED Indicator. Perfect for your DIY Soldering Welding Jobs. Heating up in less than 15 seconds. Cooling down in less than 30 seconds. Long time life with a protective cap. The Welding head can be replaced easily.