MIDI controller with a built-in 37-key sequencer. - Model Name: MPK mini plus - Number of Keys: 37 - Features: Built-in sequencer - Connection Ports: CV/Gate/MIDI ports - Software: MPC Beats I've only used this MIDI controller a few times, but it was too difficult for my children to operate. If possible, I will ship it with the shipping label directly on the box. Thank you for looking.