Operation confirmed. Velcro on the back. Only the outer box is included. From the "POG" series of polyphonic octave generators, the compact version, the NANO POG, is here! With three controls, you can adjust the dry sound, one octave up, and one octave down. It can be used in various ways, from a heavy sound like an organ to a shimmering sound like a 12-string guitar. It also features stereo output, which is not available on the original POG2.