Comlink

The Communicators are gadgets presumably created by Tails that primarily serve as communication devices.

Appearance
The communicators have a simplistic design, with  white strap to attach to the arm. On that strap is a small yellow contraption that allows the user to communicate with another ally who has a communicator and also to visually observe them through the miniture screen.

History
The communicators are primarily used throughout the majority of the Metarex saga.