I forgot about my reply on this thread a while ago but I started reading yesterday... and I must say i'm convinced!
The only annoying thing is having to wear this device every time but then again you get lots of it in return.
I more interested into building one myself cause ordering one could tickle my parents interest since I won't show what I ordered
I have the one where it has Silver instead of copper, and it has magnets on both ends. When I put it on either around my dick and ball, or just my ball, my ball would grow to be fully loaded and my dick gets filled with blood, plus I felt like lifting heavy weights and my cum has more volume like 2 table spoon on my girl. Of course, I supplement it with some tabs. But even without the supplement I find I just have to put it on when I sleep and I wake up with a healthy boner. Makes me happy.
Putting it on has some drawbacks, it slips and sometimes the plastic cord holding the metal snaps off when the erection gets hard it pushes the circumference beyond its thresh hold. So, I put some super glue to hold the rods into place and tied the rubber cord tips with sewing threads to tighten their grip. Used shoe laces to tie them around my hips and hold near my pelvis. I just wrap it around my ball.