Features: Made of premium aluminum alloy material, with anodic oxidation surface, abrasion resistant, fire-proof and durable in use. This welding machine support welding up to 0.2mm nickel-plated steel strip, 0.25mm slotted nickel strip. The integrated welding pen has good conductivity, low contact resistance, quick disassembly and easy wiring. The welding machine is built with ammeter function, which can indicate whether the quality of the soder joint is good or not, thus eliminating the defective solder joint. 30 levels of intensity and 25 levels of delay can be adjusted, with over-discharge protection, over-voltage protection, over-current protection, short circuit protection and over-temperature protection, can guarantee safety use. Also can be used to supply power for your mobilephone. 100% factory tested to ensure high performance. Specifications: Material: aluminum alloy Power: 4.2V/1.1KA (4.62KW) Battery: lithium battery Welding capacity: 0.2mm nickel-plated steel strip, 0.25mm slotted nickel strip Package size: 458g Package weight: 20 * 14 * 3cm Package List: 1 * Spot Weld Soldering Kit