Latet 70s Robo wrist-band toy ???
 

Hi im looking for a toy from the late 70s early 80s. and i've had no luck with google.
It was a gray plastic armlet for boys, it looked robotic and had various computer-like components, with fake wires to plug into holes. Something like a space ghost bracelet but I don't think it was associated with any particular character or show or movie. I never owned it but remember the commercial distinctly because I tried to build my own version. Anyone remember this?