It supports spot welding of 0.1-0.25mm nickel sheet throughout the whole process, and supports 0.25mm nickel sheet welding when fully . Owning it saves time, , worry and effort. 30 levels of output power can be adjusted to find a more suitable gear output for different materials. The welding effect is better and more convenient. The charging current is increased to 2.1A, low power consumption standby for one year, low battery protection, automatic shutdown and other functions. It is a spot welder and a power bank, with a dual- USB2.4A output, and it is also your portable fast-charging power bank. High-definition display The screen can be flipped, clearly displayed, and the status is clear at a Smarter, more accurate, and more humane. Type: spot welder Gear position: 30 gears adjustable Feature 1: 18650 lithium battery spot welding machine Feature 2: Digital display spot welder color:Black Material:ABS size:112 x 80 x 30mm Package Contents: 1 x Spot Welder 2 x Spot Welding Pen 1 x Charging Cable 1 x Nickel Sheet 1 x Sandpaper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.