The GoTalk™ 4-Plus is a lightweight, rugged, augmentative and alternative communication (AAC) aid. It has a 20-message capacity (4 large message keys, each 3" square, and 5 recording levels) PLUS two "core messages" that remain constant when you change levels. Great for essentials, like "Hello" or "All Done." 4.5 minutes of recording time. GoTalks provide fantastic sound with volume control, easy sequential recording, quick level erase, built-in overlay storage, record lock and level lock. It's a GoTalk™ so it's easy to use and affordably priced! 2 "AA" batteries included. One year manufacturer’s warranty.