Features: This is a high quality spot welder that is small, lightweight and portable, easy to put in a pocket and carry around. MOS tube + pure copper overcurrent copper strip 6-speed output power adjustable, 1-6-1 cycle, more accurate welding. Copper pen holder with 10AWG silicone wire, copper spot welding pen, wire length 300mm, pen length 100mm, humanized sleeve, safe to use. Equipped with high-speed lithium battery, thousands of points can be continuously welded on the 0.1-0.15mm nickel sheet after full charge. This product can spot welding commonly used cylindrical lithium batteries such as 14650, 17490, 18650, 21700, 26650 and 32650. Specifications: Material:Metal Battery: 3.7v, 5300mAh battery Gears: 1-6 gears Welding thickness: 0.1-0.15mm Product Dimensions: 140 x 80 x 40mm / 5.51 x 3.15 x 1.57in Net Weight:380g Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Spot Welder with Spot Welding Pen 2 x Spot Welding Pen Holders 1 x Nickel Sheet 1 x USB cable