How to use: Please fill it with gas before using it, and please press the button to turn off when filling gas. The inflation hole should face up. It may take about 10 seconds before the gas can be filled. Wait a few minutes until the gas is stable, then use it. Features: Our soldering pen with 4 in 1 soldering iron tips. Aluminum alloy handle gives you comfortable and safe soldering with good hand feeling. The flexible holder also provides your soldering pen with a convenient location when not in use. Application: Excellent performance, compact size, lightweight and portable to carry. It can be widely used in the repair of mobile devices, computer hardware, small electronic works, television capacitors or accessories, handicrafts, etc. Adjustable temperature: the button of Temperature adjustment can adjust the temperature from 250 to 450 . You can adjust it according to your needs, which is very convenient and practical. Small tips: keep it away from children when it is working, avoid fire closing on your face, body and clothes and avoid any further danger. If the tail makes a squealing noise after filling the gas, simply use the pen tip to press the port to eliminate it. Quantity Shipped: 1 piece