A 25-key MIDI keyboard with 8 pads and 8 knobs, compact and portable. - Brand: AKAI - Model Name: MPK mini - Number of Keys: 25 keys - Number of Pads: 8 pads - Number of Control Knobs: 8 knobs I don't know how to use it. The image only shows what's there. The power turned on. I will answer any questions you have to the best of my ability. I don't have expert knowledge. Thank you for looking.