Dual Pulse Welding Technology: This design releases two pulses during welding to clean the oxide layer and reduce spark splashing, delivering more reliable and consistent welds. Welding Capacity: Capable of welding nickel, iron, and steel sheets ranging from 1 mm to 0.25 mm in thickness, enabling strong joints for DIY projects. CostEffective Replacement Head: The replaceable spot pen head eliminates the need for full pen replacements, significantly lowering operational costs while maintaining efficiency. USB Charging Function: Equipped with a USB 5V1A output to conveniently charge mobile devices, making it not just a welding machine but also a handy power source. Use scenarios Repairing thin metal housings or brackets in electronics or appliances made from nickel, iron, or steel sheets in the 0.25–1 mm range, to achieve clean, strong welds with reduced spatter. Creating or repairing small DIY metal projects such as brackets, model components, or jewelry that require precise welds on thin metal. Prototyping and assembling lightweight metal components in a home workshop, with the added benefit of charging devices on the go.