The KORG Volca Sample is a programmable sampler sequencer with MIDI connectivity and battery operation. - Brand: KORG - Model Name: Volca Sample - Type: Sequencer - Function: Sampler - Connectivity: MIDI IN, SYNC OUT An AC adapter and pin jacks are included. I purchased it used and used it for about 3 years, but I'm selling it because I haven't used it much. There are no operational issues. Thank you for looking.