Why is it that I can never get the amazon codes posted on this site to work? I am trying to get the $8 laser pointer and it is not accepting the code.

Why is it that I can never get the amazon codes posted on this site to work? I am trying to get the $8 laser pointer…

Does this work with any phone/tablet? Or does it have to have special fast-charging capabilities?

Does this work with any phone/tablet? Or does it have to have special fast-charging capabilities?