This is the famous Mutable Instruments "Marbles". I've used it for a few days. The accessories, including the dice, are all included. I used rubber bands on the four screws, so there are no scratches on the screw parts. The box has been stored in a dark place and is in good condition. Marbles is a random CV generator/processor that can generate random events in various ways. It can synchronize with an external clock, control the repetition and novelty of generated material, quantize CV, and randomize CV or gates generated by other typical sequencers. ・Please purchase only if you understand modular synthesizers. ・Please purchase after you are satisfied with the product condition.