Specification Name: Portable Dual Pulse Spot Pen Welding Machine Color: as shown Battery capacity: 5000mAh lithium battery Charge and discharge: 5V/2.1A Welding material: nickel sheet, iron sheet, stainless steel sheet, aluminum sheet Welding thickness: 0.1-0.25mm Maximum welding current: 1200A Size: 155*82*28mm/6.1 x 3.23 x 1.1 inches PORTABLE DESIGN: Our portable double pulse spot welder is compact and lightweight, easy to transport and convenient to use in various locations. 2024 RECENT DESIGN: Our machine features a 2-in-1 multi-function battery spot welder with dual pulse welding technology for increased stability and precision. It can weld materials as thin as 0.25mm, making it suitable for a wide range of applications. EXTRA LARGE SCREEN: Our welder is equipped with a 1.8-inch color LCD screen that clearly displays important information such as internal temperature, state of charge, remaining battery life, gear position and time interval. This allows users to easily understand the working status and adjust settings accordingly. Convenient Welding Pen: With its specially designed high-temperature wire, our welding pen ensures safe and efficient spot welding. Its compact size and ergonomic design make it easy to maneuver, providing precise control during welding operations. Versatile: Our portable dual pulse spot welder is suitable for spot welding a wide variety of plates and batteries, including nickel plates, iron plates, stainless steel plates, aluminum plates and nickel CD batteries. This versatility makes it ideal for professional and DIY projects. Product List 1*Spot Welding Kit 1*usb cable 1*Instruction manual