This is my second 3d pen. Love it. It works very smooth and has all the features I need. One thing when you buy 3D pen is this: make you need to buy the right kind of filament otherwise, your pen might now work with the wrong one. And this 3D pen included the filament so that you will get messed up by the wrong one. Another thing I like this 3 d pen is its leakage prevention. It has a screwed nozzle that will prevent from blockage of the filament after melting. This pen is so easy to set up only need 60 seconds which is much faster than the one old i had (took a minute and a half). Most of all, kids friend. and my kids love it. This is definitely one of the best gifts that I ever bought for this holiday
https://www.amazon.com/INKERSCOOP-Printing-Children-Educational-Painting/dp/B07GBZYSDL