Features: Experience precise and versatility with our 510 portable soldering iron pen kits, featuring a three level adjustable voltages function for diverses soldering needs. Designed for convenience, this soldering iron operates on a 3.7v battery, ensuring quick heating and a fashion finish that is both stylish and comfortable to hold. For electronics enthusiasts, DIYer hobbyists, and professional repair technicians, this tool caters to varying levels of expertise and requirements. Perfect for home repairs, electronic projects, and outdoor tasks, this portable soldering iron is easy to carry and use in multiple setting. Crafted from zinc alloy and stainless steel, this soldering pen combines durability with functionality, making it a essential addition to your toolkit. Specifications: Component:Zinc Alloy Stainless Steel Size:Approx.88.9x14.2mm/3.5x0.55inch Color:Black/White/Blue/Pink Package Includes: 1 Set 510 Soldering Iron Pen 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 coloring of the item. Thanks for your understandings.