【High Definition LCD Color Screen】This mini spot welder adopts 1.8 inch LCD color screen display, through which you can easily understand the various parameters of the spot welder, such as battery level, interval time, battery voltage, preheating time, pulse time, welding current and so on, which provides a clear view of the working status of the product. This design ensures an easier and safer spot welding process. 【Double Pulse Spot Welding Technology】 Two pulses are released during welding, one pulse cleans the oxidized layer on the surface of the welding brief and reduces the phenomenon of spark spatter, and the other pulse carries out the welding to ensure the consistency of the energy output, which effectively improves the reliability of welding. 【Precise control】 adjustable output, custom set preheat, pulse, interval, even point number of times to make the welding more stable and firm; 1200A strong current discharge, stable welding, welding thickness of 0.1-0.25mm nickel, iron, steel, etc., support for 0.3mm aluminum welding, welding, welding firm, welding joints excellent. 【Built-in 5000mah power battery】 long life, real-time battery temperature monitoring, prolong life; comes with USB 5V 2.1A output, can be charged for cell phones and other USB devices. 【Intelligent and safe to use】 Multiple safety protection reminders, short circuit protection, low temperature protection, high temperature protection, overcharge protection, over discharge.