describe 3D Printing Pen with LCD Screen for Kids and Adults - 12 Colored PLA Filaments - White and Black Long USB Cable1 meter long, leaving enough space for operation, no extension cable required Besides the pen holder, the Lovbay 3 d pen also comes with a power plug and a USB charging cable. This means you can use the mobile battery (power strip) away from an outlet. Very easy to useEasy to read LCD screen|| Very light (50g), the diameter of the pen is only 2 cm, it is very comfortable to hold in the hand. || Adjustable Speed: Speed can be adjusted to 3 different levels. You can easily control the output speed and filament temperature and use it flexibly. ||Auto Power Off: It will automatically power off if it is not used for more than 3 minutes. 12 Colors FLA FilamentColor: The package contains 3D pen colors: black, white, fluorescent green, fluorescent yellow, fluorescent orange, blue, pink, red, dark purple, gray, gold, dark brown. Length: 3.1m (10ft) per color; PLA Filament Total 37.2m (120ft), Filament Diameter: 1.75mm (Dimensional Accuracy +/- 0.05mm). Environmentally friendly and non-toxic: PLA filament is a new type of biodegradable material made from plants. Including Standard Size 1.75mm ABS or PLA FilamentThis 3D printer pen kit comes with 37.2M colored PLA filament. || The refills are standard sizes (ABS or PLA), so you shouldn't have a problem if the filament leaks. || PLA material is non-toxic and tasteless. || Replacing the filament is very easy (one push of a button) || No clogging issues. For children over 5 years under supervisionBecause the melting temperature of the filament varies between 180 and 200C, this can make it a dangerous source. Therefore, you must be very careful not to burn yourself. The nozzle and filament can get very hot. The 3D printing pen is suitable for supervised children and creative adults ages 5 and up.