CASIO VL-1 - VL TONE (1981) The Synthesizer in the Pocket Calculator - How make own sounds? - YouTube
Retro-Toys: Casio VL-Tone VL-1 - YouTube
Casio VL-1 secrets - SyntherJack
CASIO VL-TONE VL-1 - USATO - Arcobaleno Centro Musicale
Starxxon on Twitter: "Adding a new member to the Casio VL-Tone family, the Casio VL-5! It's a larger, polyphonic version of the original VL-1. https://t.co/HKpLt24Eyf" / Twitter
File:Casio VL-1 Inv Nr 81934.jpg - Wikimedia Commons