Features: No need for 3D painting paper: igniting your imagination with this magical pen, the whole air is your canvas. Supporting power bank supply: no restriction, bring a power bank; you can enjoy the fun of drawing everywhere. Switch between PLA and ABS filament easily: just press the unload button and temperature plus button. Equipped with OLED monitor: the messages you need are clearly showed on it. Powerful motor inside: allowing user to create objects with fast speed. Easy and effortless to operate: easy to enhance or lower the temperature as needed. Simple to operate with one hand: unique double click to load and unload filament automatically. Superior ceramic nozzle: helpful in keeping the nozzle at low temperature. Making the pen can work fluently and perfectly. Ergonomic slim design: comfortable to grab with, user can use it for a long time without fatigue. Supporting PLA and ABS filaments.