Features: brand new and high quality Six gears switch more accurate welding effect is good. One machine with dual-use usb 2.4mah output,it is also your portable charger. Bulit in temperature control probe,real-time monitoring temperature,over 60 degrees,the system automatically shuts down to protect the machine. The spot welding pen is about 40cm longer and operates flexibly. Full current state can weld 0.2mm nickel sheet,non-full current state support the whole process of 0.1-0.15mm nickel sheet,welding firm. Specifications: Material:Metal Size:102x84x28mm/4.02x3.31x1.10in Battery Capacity:5000mAh Output Voltage:4.2V(Max) Output Current:650A(Max) Input Interface:Type-C USB Output:5V/2.4A(Max) Net Weight:450g Package Includes: 1x Spot Welder note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.