Features:brand new and high qualitySix gears switch more accurate welding effect is good.One machine with dualuse usb 2.4mah output,it is also your portable charger.Bulit in temperature control probe,realtime 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,nonfull current state support the whole process of 0.10.15mm nickel sheet,welding firm.Specifications:Material:MetalSize:102x84x28mm/4.02x3.31x1.10inBattery Capacity:5000mAhOutput Voltage:4.2V(Max)Output Current:650A(Max)Input Interface:TypeCUSB Output:5V/2.4A(Max)Net Weight:450gNote: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.Package includes:1x Spot Welder