0.91 inch OLED screen, various data display Starting from the first gear, slowly increase the power until it can be welded. Do not increase the power if you can weld. Avoid MOS bombs. Black solder joints indicate that the power is too high. 1-20 gear power adjustable When soldering, gently press down on the soldering pin, the nickel sheet and the battery can be bonded together. The harder you press, the weaker the welding will be. It will automatically trigger after pressing for one second. Intelligent regulation charging (MAX2A) Due to the different internal circuits of the spot welding machine, there may be compatibility issues with the iphone charging, so the iphone cannot be charged temporarily. If you need to charge the iphone, you can short-circuit the 2 and 3 of the usb output port. USB 5V output (MAX2.4A) can charge Android phones Starting from the first gear, slowly increase the power until it can be welded. Do not increase the power if you can weld. Avoid MOS bombs. Black solder joints indicate that the power is too high. Touch the button panel, data adjustment is more convenient When soldering, gently press down on the soldering pin, the nickel sheet and the battery can be bonded together. The harder you press, the weaker the welding will be. It will automatically trigger after pressing for one second.