3D Printing Pen with LCD Screen, 3D Pen Drawing Printer Pen with 30g PLA Filament for 3D Scribbler Printing, Drawing, Doodle Model Making and 3D Modeling LED Screen Displays: LED screen will show current temperature, allowing for accurate melting levels. Latest Technology: As pen draws, filament is filtered and heated through the body of the pen, which Button controls allows you to control extrusion speeds and reverse filament.Unclogging mechanisms th Easy to Use: A single press for continuous extruding flow for more ease of doodling. Speed controls 3D printing pen is perfect for children above 8 yrs old and adult no matter you are artists, hobbyis