Excelvan Light 3D Doodling Drawing Print Printing Pen LED Screen with Safety Holder + 2x 3 Meter PLA/ABS Filament for Painters Product Designers Hobbyists Children Students Kids (Blue) Enhanced 3D Pen Quality From the first 3D pen that comes out and sold in the market, our brand study and evaluate the negative issue in terms with 3D pen quality. This 3D Pen developed based on customers and public demand. More slim with best handle curve style for easy holding, super lightweight only 55 grams. Let your hands move freely and comfortable for smooth operation. Create Your Imagination With the upgrade Excelvan Intelligent 3D Pen, you can bring your creative thoughts into a real object. It can also enhance and develop the art and calculation skills of your kids. Let the 3D Pen nourish their capabilities for the future. It's fun, entertaining with educational value. Lower Temperature Safe Nozzle Patented ceramic nozzle with lower temperature in tip won't hurt people. The pen will get into sleep mode itself after 1 minute no use. Safest 3D Pen for you and your family. Easy to Troubleshoot Sometimes when you replace different filament colors, some residue remains inside and it may clog the hole into the nozzle, simply press the two buckle located on the nozzle part and pull it out then remove all the clogs inside. Important Tips Just for a quick tips. To avoid clogging the filament feeder inside always cut the ending tip portion of the filament where you stop, because the milted part need to be cut off so that you can smoothly insert it easily without any problem in times when you need to use it again.