Communicators Hypospray Tricorder Uniforms Phasers

Communicator badges offer communication between Starfleet personell.
Equipped with a dermal sensor that can be used to restrict
usage to one authorized individual only.

It is constructed of a crystalline composite of silicon, beryllium,
carbon-70 and gold.

Communicator badge from the year 2364

Communicator badge from the year 2371