FERNANDES Theremin with echo function. Echo Theremin. I've only played it a handful of times and it has been stored in its box for many years. Operation has not been confirmed. The rubber "FERNANDES" logo is sticky. This is due to aging. - Brand: FERNANDES - Model Name: ECHO-THEREMIN - Color: Black/Gray - Accessories: Box, Instruction manual Thank you for looking. Guitar, musical instruments, band