Roland U-110 sound module, featuring an LCD display and MIDI connectivity. Rack effect unit. - Model: Roland U-110 - Type: Sound module - Connectivity: Headphone jack, MIDI terminals - Display: LCD display - Volume control: Volume knob The only included item is the main unit. I received this item from a friend, but I don't know how to use it, so I have only confirmed that it powers on. Therefore, I will consider it a junk item. Thank you for looking.