The Micro 3D Printer Retail Edition - [Purple] Auto-calibrating 3D Printer, Assorted 3D Ink - 1 Spool, 1.75mm, 0.5lb., Windows Software, External Filament Port. Plug and play right out of the box. Simply download models and watch your creations come to life. Achieve high-quality print consistency every time with built-in auto-calibration technology. Sleek, compact, and quiet 3D printer, perfect for indoor use. The only consumer friendly 3D printer with UL safety rating.