ZOOM 504 Acoustic guitar effect pedal. It has been cleaned simply. Both battery and adapter operation have been confirmed. The adapter is not included. There are scratches and dirt, but there is no problem with use. Instant purchase is OK. Thank you. Compact multi-effect pedal for acoustic guitars, with tuner function. - Model name: ZOOM 504 Acoustic - Type: Compact multi-effect pedal - Output terminals: OUTPUT - Input terminals: INPUT - Functions: Tuner function, edit function Thank you for viewing.