The welding pen features a convenient USB rechargeable function, ensuring you can easily power up your 350mAh Thread Soldering Iron Kits anytime and anywhere. With our Welding Pen, you receive a comprehensive kit that includes thread soldering iron capabilities, making it ideal for various DIY projects and repairs. Equipped with a robust 350mAh battery, this soldering pen guarantees longer usage time, allowing you to complete your tasks with efficiency without frequent recharging interruptions. Tailor your soldering experience with the innovative 3 Gear setting feature, providing different temperature options suitable for diverse materials and applications. Each welding pen portability and ease of use - perfect for on-the-go soldering needs or tight workspaces.