Sound Master Rhythm 1 vintage early 1980s analog drum machine w/ original box

Sound Master Rhythm 1. Rare early 80s analog drum machine with original box. This is a very early version 1 with the stomp box foot switch (later versions have a square pushbutton). It also uses two 9v batteries (the later version uses only one). Very good condition, clean inside with no evidence of any corrosion or battery leakage. Tested, working exactly as it should. Please ask any questions before buying; THANKS!!