I purchased this item, which was only opened and unused, here three years ago. I haven't used it much since I bought it, and the LCD protective sheet is still on. The OS has been updated to the unofficial X.08. I had no problems when I used it before, but since it's a complex product with many detailed functions, I can't test everything. Please understand that this is the current condition of the item. Non-smoker, no pets, and never taken outside. I will not accept price negotiations. Please refrain from purchasing if you are overly concerned about details. Please do not purchase if you need a long time to rate the transaction. Returns are not accepted to prevent product substitution. If you have any questions, please ask before purchasing. I cannot respond to questions after purchase, so please understand. Thank you for looking. #ELEKTRON #エレクトロン #machinedrum #マシンドラム