Features: Experience efficient and secure spots welding with this portable handheld welder, featuring advanced double pulses technology for fast nickel/copper bonding and an industrial grade safety chip that ensures millisecond power cutoff during anomalies. Equipped with adjustable electrode spacing (0.5-3mm) and double auto/manual modes, this ABS constructed welder delivers precise control over weld depth and stability across varied metal thicknesses. Ideal for DIYer enthusiasts, electronics technicians, and hardware maintenance professional seeking reliabled metal joining solution for battery packs or equipment repairs. Perfect for crafting battery assemblies, reinforcing electrical connection, or repairing thin metal components in workshops, garages, or field repair scenarios. Compact yet powerful, this versatile spots welder combines professional performances with user friendly operations, making complex metal fabrication tasks accessible to both hobbyists and experts. Specifications: Componen: ABS plastic Size: Approx.165x45.5x24mm/6.5x1.79x0.94inch (excluding solder pins) Input interfaces: Type-C Output voltages: 4.2V Input voltages: 5A/2.1A Battery capacity: 1800mAh Built-in battery: rechargeable lithium batteries Double pulses output: support Package Includes: 1 Set Handheld spots Welder note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.