describe:Simple and convenient operation, wireless design, safe to use, reasonable size, suitable for home use and carry out.The voltage knob can be adjusted in both directions, and the temperature of the soldering iron can be adjusted.There is a knob at the bottom to adjust the voltage, and the adjustable range is 3.3V-4.8V.Soldering iron interface can be connected to soldering iron and charging.Copper alloy soldering iron, fast heat transfer and fast heating.The power button has a prompt light, press the power button, the light will be on.During use, the button light flashes to indicate that the battery power is low. Need to charge.The package includes:1 pc x soldering iron1 x USB cable1 x bracketnotes:1. Please place it out of reach of children or under the supervision of adults.2. Due to light and screen differences, the color of the product may be slightly different from the picture.3. Please allow 1-2cm difference due to manual measurement.