Feature: 1. Advanced Adjustments: With 80 accuracy adjustment settings beyond the basic dual pulse feature, this spot welder caters to diverse operational needs, ensuring detailed performance for every task. 2. Intelligent Control Pen: Building on automatic welding, our innovative hand held control pen allows you to finely manage trigger timing for accurate, meticulous spot welding, giving you total control at your fingertips. 3. HD Display: Experience exceptional clarity with a premium 2.0 inch true color screen boasting a resolution of 320x240, enhancing usability and providing an outstanding visual experience. 4. Pen Length: Our specially designed 40cm pen length strikes the excellent balance, maximizing effective welding length and minimizing energy loss, ensuring excellent operational efficiency. 5. Scientifically Engineered Structure: This welder features a thoughtful design that separates the circuit board and battery, effectively reducing heat impact on the battery, significantly prolonging its lifespan. 6. Dual Safety: Equipped with an integrated quality safety chip, temperature control sensor, and advanced safety algorithms, this spot welding machine defends your works, ensuring dependable and secure usage at all times. Specification: Item Type: Mini Spot Welder Material: ABS Output Voltage: 4.2V (MAXIMUM)Output Current: 650A (MAXIMUM)Input Current: 5V 2.4A (MAXIMUM)Gears: 80 adjustable gears Input Interface: Type C Battery: Li battery (built in) Capacity: 7500mAh (single battery capacity) . Package List: 1 x Spot Welder 2 x Smart Handheld Pen 2 x Copper Solder Needle 1 x 2m Ni Plate 1 x Sandpaper 1 x Charging Cable 1 x User Manual