This document provides an overview of electronic communication device features. It begins with acknowledgments and then defines what features are, why they are important to learn about, and the main types of features including output, access, selection set, message composition, and other physical/electrical features. Specific examples of features are given under each type such as methods of communication, selection methods, vocabulary capacity, message composition tools, weight, portability, control accessibility, backup capability, memory, durability, power source, and software compatibility.