GBB Intelligent 3D Printing Pen, 3D Drawing Model Making Doodle Arts & Crafts Drawing, Stimulate childrens' Creativity, Improve Spatial Thinking Ability (Send ABS Fibrous Material + Power Supply) 1. GBB 3D pen, Intelligent control, portable and only 55 grams. 2. Crafting pen with OLED screen, eight digital Speed Controls for more accurate and stable extruding. 3. Packaged with ABS fibrous material and power supply, this 3D drawing pen is a great tool for anyone interested in 3D doodle model making, even hobbyist can draw freely. 4. Develop imagination: drawing, model printing & art crafts design, promote children's brain development, safety, health, eco. 5. Perfect after-sale service: supply 12 months warranty and tech support.