All keys, sounds, and rhythms tested and working perfectly. Runs on 6 AA batteries (included).
Yamaha PortaSound PSS-140 Electronic Keyboard – Boxed & Working – Vintage Yamaha
Vintage Yamaha Portasound PS-300 - 37 Key keyboard with Case
Yamaha Portasound PSS-30 Vintage Keyboard Electronic, Working
Vintage 1982 Yamaha PORTASOUND MP-1 Electronic Portable Keyboard - FULLY WORKING
Yamaha PortaSound PSS-380 Keyboard Vintage FM Synth Tested Working
Yamaha Portasound MK-100 Vintage 1983 49-Key Synthesizer Keyboard
