QM 3D Printing Drawing Pen with LCD Screen Model -1.75mm ABS Filament Refill (YELLOW)

although mine failed 10 minutes after trying it the dealer did give me a refund but not an explanation as to why it might have failed nor any positive comments.

Bought these for grandchildren ages 9 and 11. I was told they both enjoyed using them although I haven't seen anything they made so perhaps the interest doesn't last long