The KORG TM-60 is a compact instrument accessory that combines tuner and metronome functions. - Brand: KORG - Model Name: TM-60 - Functions: Tuner, Metronome - Color: White - Battery: Uses AAA batteries - Size: Compact size This item was used by my child in their club activities until they retired. There are small scratches, but my child has confirmed that it works without any problems. I don't know much about tuners. Please understand that this is a used item. Please refrain from making any claims or returns. If you agree to these points, please consider purchasing. Thank you.