It only plays one note and the so called sin graph it put up is just for show in the pictures. I needed something that could adjust the graph, but the graph stayed the same no matter what note was played. Ridiculous! Not worth 2 dollars, I want my money back now, this was a complete rip off, would give it 0 stars if I could.

I was hoping to experiment with tuning systems, but no can do with just one note