Specifications:Material: Plastic + MetalFilling capacity: 8MLTemperature: Flame temperature 1300 (adjustable) Soldering iron temperature 450 (adjustable)Use fuel: Pure butaneUse time: 35-45 minutesLength: Approx. 13cm / 5.11inchWeight: Approx. 78g Features: With fine workmanship and excellent quality, it can be used for a long time. Portable pocket sized, lightweight and convenient. Easy to maintain and refill. It uses widely available butane gas. The soldering pen will melt both silver and gold solder. It can be used as a mini-torch or heat blower. Great for precision soldering for things such as electronics, instruments, or circuits to a computers motherboard.