Features: 1. This 75W 18-20V battery-powered welding kit is made of high quality ceramic heating elements that heat up to 460°C in 30 seconds. It has a constant temperature function, which can improve your work efficiency. 2. Adopt of high quality material, built-in low-voltage protection, 75W power for faster and smoother use; It's very lightweight, easy to carry, no need soldering station, just plug Li-ion battery and work. You can take it to anywhere. 3.This wireless soldering iron tools meet a variety of DIY needs, such as welding circuit board, appliance repair, jewelry and metal headdress making, computer; The soldering kit is good choice for welding circuit board, Home DIY hobbyists, beginner studying electronics, appliance repair, jewelry welding. Instructions for use: 1, press the middle key for 3 seconds, the first boot default heating to 350°C. 2, press the right button to heat up, the green light is steady on, when the set value is reached, the green light flashes. 3, press the left button to cool down, the light goes out, when the set value is reached, the green light flashes. 4, press the middle key for 2 seconds, shut down and stop heating. 5, the next time you start, the default temperature becomes the last set value, that is, there is a memory function. Adjustable temperature 200-460°C. Specification: Name: Cordless Soldering Iron Kit Material: ABS + metal Input: 20V Max Power: 75W Maximum temperature: 480℃ Wire diameter range: 1-1.2mm Package included: 1* Solder Gun (Battery Not Included) 5* Soldering Tips 1* Solder Wire Note: 1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures.