Hero Privacy Pen

I have tried to use these mutiple time since they arrived. I charge them and get no sign of them working. I even went so far as to watch videos to see if there was a trick. NOTHING!! Not from a single one. What a disappointment!

It's easy to use, and I like knowing that I can take it wherever I go. It can also be used as an alarm!

Waste of money. Do not buy. Didnt detect things i knew were there in my own system. Cheap plastic construction. Failed proof of concept test