◎ This is a heat pen that uses AA batteries. ◎ The circuit design has been reviewed and improved to enhance heating speed and durability. ◎ Operation has been checked, so you can purchase with confidence. It heats up in about 1 second after turning on the switch, making it very easy to use. The finish is cleaner when using this to melt threads compared to using a lighter. Since you can work on the edges, you can leave the threads shorter than with a lighter (Image 3). If you cut the thread directly without using scissors, the finish will be worse. I also use this product, so please feel free to ask if you have any questions. I use rechargeable batteries. In addition to leathercraft, it can be used for various other purposes such as processing 3D printed output, plastic models, wood burning, lost wax casting for metalworking, and more. ・The material of the cap has been changed from the conventional product. Please be aware that it is prone to cracking and scratching during transportation and adjustment. ※ Please attach the included cap after use for storage. ※ It will become red hot, so please be careful of fire hazards during operation. ※ Please be aware of similar products that have unauthorized reproduction of my images and text. My products are all inspected and adjusted before being described. ¥200 off when bundled with other products. (Please request in the comment section or use the bulk purchase function before purchasing.)