KORG ELECTRIBE ER-1 mkII rhythm machine, featuring LED display and multi-function buttons. - Brand: KORG - Model Name: ELECTRIBE ER-1 mkII - Color: Bronze - Function: Rhythm Machine - Control Panel: LED display and buttons Thank you for viewing. Includes the main unit, instruction manual, and AC adapter. The master volume has some scratchiness, which was compensated for on the mixer side. The volume of each part functions normally with the Level knobs. Other functions have been confirmed to be working.