Some Sort Of Handtool

I know it it used on a car?

Red Thing

I actually don't know what this is. I thought maybe it had something to do with eye glasses but I'm really not sure?

Has to do with a screw?

What is this blue thing?

Apparently it has to do with cable because obviously it says that right on the tool. I'm still uncertain of what this particular tool is for or even what it is called?

The right end of it has a speaker on it?

You use this tool with your hands

You wear it on your head