Specifications: Color: Black Material: ABS, PCB Input Voltage: 5V Output Power: 6 Levels Adjustable Applicable to: 0.1-0.15mm Nickel Plated Steel Sheets, 0.1mm Pure Nickel Sheets Built-in Battery: 1 x 3.7V 4000mAh Lithium Battery Item Size: 140 x 80 x 40mm / 5.51 x 3.15 x 1.57in Net Weight: 325g / 11.44oz Package Size: 15 x 15.5 x 5cm / 6.10 x 5.91 x 1.97in Package Weight: 414g / 14.60oz Features: High Output Power: Efficiently welds 0.1-0.15mm nickel-plated steel and 0.1mm pure nickel sheets, boosting your productivity. Portable and Lightweight: Its compact design is space-saving and easy to carry, perfect for home use, DIY projects, and maintenance tasks on the go. Easy Operation: Features one-key activation and shutdown with 6 adjustable power levels for user-friendly and adaptable functionality. Quality Construction: Made from high-quality ABS and PCB, ensuring durability and reliable performance with sophisticated power management. Automatic Trigger: Integrated self-check function allows automatic triggering when the welding pen contacts the material, ensuring precision and safety with a swift 0.8-second response time. Package Includes: 1 x Spot Welder with 2 Welding Pens 2 x Welding Pen Sleeve 1 x Nickel Strip 1 x USB Cable