Eno OCT-1. Pearl Octave clone. Analogue +1, -1, -2 octaves, the up is basically octave fuzz, the downs are thick but glitchy as it is analogue. I use one of these a lot for mess, one of 4 pedals including tuner on my board for bass. Mini pedal so needs external power. Comes in a drawstring bag like people use to keep keep dice or counters.
No battery space inside this, so needs an external power supply, not included, but takes the standard guitar pedal sort.
Welcome to come try it in Greenbank, got amps and instruments about. Can post by arrangement.
Check out Ampstack for more music gear, and my band, Warrior Pope.