This is a KORG remote editor. It came out of the closet during the year-end cleaning. I don't have any equipment to test its functionality, so this item is being sold without confirmed operation. It may not work, so please refrain from purchasing if you are looking for a complete product. Since this item is sold without confirmed operation, returns will not be accepted if it does not work after purchase. I am selling from Kanazawa City, Ishikawa Prefecture. If you bring a compatible device such as an M3R or A1, I will allow you to test its operation. However, I will not provide any warranty if the equipment is damaged by connecting this item. If you would like to test the operation, please comment. The items for sale are the RE1 and the connection cable.