This is a KORG microKEY Air (37 keys). It comes with a perfectly sized Hammond-made case for a keyboard harmonica. It was only used a few times for rehearsals before live performances, and only once during an actual live show. After that, it was hardly used, so the usage frequency is quite low. Both Bluetooth and USB connections have been tested and are working. The keys, pitch/modulation wheels, and all buttons are also functioning without any issues. There are no noticeable scratches or dirt, but please understand that as a used item, there may be minor scuffs. Please check the photos for the condition. *Everything shown in the photos is included. *iPad, PC, cables, etc. are not included. It is compact and easy to carry, making it recommended for DTM and live performance use.