Best 3D Printing Pen By NaturaLumia - USB 3D Printer Pen Doodle Drawing Electronic Pen with OLED Display - Extra Portable, Semi-Automatic Art Doodler With 1.75MM Filament HASSLE FREE FUNCTION - In difference to other 3D pens, our doodler features a unique function that provides automatic filament feeding without the need of constantly pressing a button. Just double press the forward/backward button and start drawing in air ! EXCELLENT QUALITY - We are confident that once you use this item for the first time it will become instantly your favorite habit and you will use it daily. To ensure a long lasting experience, we created this product using the highest quality materials on the market that can guarantee an extra-long lifespan ! PERFECT GIFT - It is sleek and extremely popular. A gift that every kid and grown up will fall in love with. Suitable both for boys and girls, this superb doodle printer pen can make for the best present for birthdays, holidays and generally every occasion ! EXTREMELY PORTABLE - Thanks to its USB connection and unique lightweight construction you can carry your pen everywhere and have unlimited fun. For added comfort or outdoor use you can just connect a power bank and start creating, without the need of a socket ! COMFORTABLE & ERGONOMIC - Create art effortlessly using out revolutionary 3D pen in just a few seconds. Its stunning thickness will provide the needed grip and convenience to do anything you want without tiring your hand or creating a feel of limitation !