This vintage TI99/4A cassette, model PHT 6050, is a rare find for collectors of vintage computing. Along with the cassette, this set includes an instruction manual to help you navigate the strange odyssey of this piece of technology. But most importantly, this item has been thoroughly tested and is in working condition. The brand, Texas Instruments, and the country of origin, United States, add to the historical significance of this piece. Don't miss out on the chance to own a piece of computing history.