The 3D pen can be charged by mobile power bank, computer, laptop, which allows you to draw inside and outside more easily. (Make sure the current is 5V \/ 2A) EASY TO USE 3D PEN Red light will light to indicate preheating, it will take about 2-3 minutes. Double click on the front button to start and feed the filament to the back of the pen. Once the filament has reached the nozzle of the pen, click forward to stop. Once you are done with your design, press and hold the reverse button to retract the filament. MULTI-FUNCTIONAL Our 3D printing pen is temperature adjustable to accommodate multiple types of filaments: PLA (160-210 , 320-410 F) or ABS (210-235 , 410-455 F). Unlike other 3D printing pens, we have an easy to use stepless speed slider designed for optimum speed adjustment. Perfect for any task, from slow and complex projects to faster filling jobs. SAFE \u0026 RISK FREE PURCHASE This premium motorized ceramic nozzle 3D printer pen ensures safety and high performance without obstruction. Equipped with 2 minutes auto standby function after stopping 3D scribbling, anti-clogging functions and entititves controls, it ensures a flawless doodling experience. THE BEST GIFT The pen features 'A stepless speed function designed for optimum speed control no matter what the task - whether it's slower complex projects or faster filling jobs. This 3D printer pen is a great gift for kids to help them improve their spatial thinking, cultivate creation, imagination and artistic skills, turn their ideas into reality. [Product Name]: 3D printing [Product features]: Three-dimensional painting and high temperature printing, with temperature display [Product specifications]: including pen, adapter, manual, 3 m3 color consumables, base. [Product use ]: Used for children's 3D three-dimensional painting printing production, to develop the imagination, free to paint [Base material]: Consumables using ABS and PLA, environmentally friendly materials environment