※※This product only uses preset sounds※※ Please purchase with the understanding that this is the case. To use it properly, turn the power ON while holding down [UP], [DOWN], and [WRITE] each time. (This will reset it to factory settings, clearing the memory.) I considered attaching a battery holder to the board, but it seems the product I purchased used was already a failed one. To modify it with a battery holder, I would need to remove the board and draw out the negative terminal from the back. I don't have time for the modification, so I will include a new battery holder and a new battery. I think it's a good deal for anyone skilled with a soldering iron. Other than that, I have confirmed that it is in good working condition. How about owning the best EWI ever made? I also have a working EWI3020 listed as junk. Please take a look if you're interested. ※Please request price reductions in the comments.※