Hi there, thinking of selling my OP-1, i purchased this used in early 2021 from someone who had only used it for a few hours. i would say i’ve gotten a significant amount of use out of it, but i am wondering about selling it to fund the purchase of a new MacBook Pro, lol. included: the OP-1 itself, travelling case, cable to connect to your computer (for use as a MIDI keyboard and transferring files etc.), plastic overlay/guide thingy which might be helpful when learning, and original box as far as i have gathered, there is nothing wrong with this machine. it functions as expected. i have not been staying on top of updating the software of this machine, i believe there are updates though