Thank you for viewing. This is a YAMAHA QY300 sequencer from Yamaha. 【Operational Status】 During the check, it powered on, and I was able to listen to the internal demo sounds. I believe the buttons are also responding. Operation beyond the above has not been confirmed due to lack of an operational environment. 【Condition of the Item】 The LCD has some discoloration, but the display content is still visible. There are also scratches from normal use. Please check the photos. 【Included Items】 AC adapter Instruction manual Based on the above, this product is sold as-is. Please understand that not all functions have been confirmed before purchasing. There is no operational warranty. If you are looking for one, please consider this opportunity.