via this auction
mechanical animals (RSS)
"Not much info can be found about this pedal on the web, it has been made by KAZAN music instruments factory, well-built, has 2 parameters and make a WAH WAH effect.
This particular unit is in excellent near mint cosmetic shape, but it has missing an original knob cap (volume) and also a battery cover - otherwise full working condition.
Control panel parameters:
— Timbre, Volume"