49-key MIDI keyboard, USB connection, with 2 control knobs. - Model Name: KOMPLETE KONTROL A49 - Number of Keys: 49 keys - Color: Black - Control Knobs: 2 knobs - Connection Type: USB connection Thank you for viewing. This product was purchased new and has not been used for creating DMT or similar. After checking the feel of the keys and buttons, it has been stored on a desk. As shown in the fifth photo, there is one scratch on the left side. Since it hasn't been used much, please consider it as a used item in good condition. Thank you for your consideration!