Early 90's magic pen activity book??

[Boo_x]

I used to have a couple of activity books when I was younger, must have been early 1990's, that came with a chunky black plastic pen that was battery operated. You had to answer the questions in the books using the pen and if it was right it would go green and do a noise and wrong would go red. Can anyone remember what it was called??? Thanks

[pizza]

It was called questron Boo-x

[Lizi13]

Pizza is correct but the other type was the nitreon 6783