With the Optimist MMX-3, ZYGO has enhanced a versatile PC to provide the loud, clear output and switch access input required for an AAC device. It's usable like a laptop from the keyboard and/or as a touch-screen tablet. It's durable, is drop and spill resistant, has a built-in carry handle, and will withstand the demands of everyday use. The Optimist-MMX-3 is available preloaded with a choice of AAC packages and a variety of speech synthesizers. Or, the unit is available without software so you can add your favorites. Dialects, dedicated Speech Generating Device (SGD) versions, are available for Medical Assistance requirements. They are identical in every way to the Optimist-MMX except non-communication functions are locked out. You choose the AAC program, but it will only run the AAC software you choose. The Optimist is an integrated communication system, while the Dialect meets the restrictive Medicare criteria as a dedicated speech generating device. The Medicare HCPCS code is E2510.