Easy to adjust the heat of the pen and the speed of which the filament (ABS and PLA accepted) draws at. This 3D pen is far greater than the other generic brand 3D pens, because of its new light weight and easily to hold style. When the user leaves the pen for over 5mins the pen with automatically turn off the heating system and prevent the pen from over heating to avoid potential danger. This pen can bring any artistic minds best creations to life by just the power of a pen.