This is a vintage Speech Synthesizer unit that is made specifically to be used with Texas Instruments TI-99/4A computer. It is a perfect fit if you are looking for an adapter with a vintage touch for your Texas Instruments system. It comes with one unit of the Speech Synthesizer and is ready to be used. The country/region of manufacture for the product is the United States, and it also has a vintage tag attached to it. The device is untested. PayPal Only.