The main unit and the original adapter are included. Operation has been confirmed. The display cover is missing, but there are no issues with functionality. It may be possible to attach an acrylic plate or something similar. It can also run on batteries, making it portable. It has 199 built-in instrument sounds. You can select 14 of these sounds to create a drum kit. There are sounds similar to the TR-808 and 909, and you can set pitch, pan, and volume for individual sounds. There are 396 preset patterns and 99 user patterns that can be created. You can arrange the 99 patterns freely to create 99 songs.