Micro-Com

Micro-Coms are items of technology used in The New Adventures of He-Man.

A Micro-Com is a tiny listening device that can be attached to a person's clothing without them knowing it and transmit sound waves to another source. Skeletor once had the Evil Mutants attach a Micro-Com to the robes of the captive Master Sebrian before allowing him to escape.

The New Adventures of He-Man

 * The Seeds of Resistance (mentioned)