It's not even big enough for me to hold in my hand. It's about the size of a pen for a child. Also it writes some what and will only show up if you use the light that's on the pen. I thought it was glow in the dark kind of. And it seems to be dried out. I had a hard time getting it to write in the beginning. [Source : Wish]

it works, the light button is hard to press[Source : Wish]