Guitar wah-wah-wah effect rehoused in "Okaasan to Issho" VHS case. So instead of a rocking foot pedal you control the wah-wah-wah effect by turning the red knob.
Controls bottom to top: input, bypass, wahwah, output.
Powered 9V battery or 9V DC centre-negative power supply.
circuit: PSK Wah donated by Clinton Watkins.