The VE-20 multi-function vocal processor features harmony and reverb effects. - Model: VE-20 Vocal Processor - Color: Red - Type: Vocal Processor - Features: Phrase Loop, Harmony, Reverb Level - Power Supply: Battery or Adapter - Serial Number: 2P1328 - Controls: Footswitch for REC and PLAY Thank you for viewing. I am selling this because I no longer use it. It was used two or three times in live performances. Operation has been confirmed. The original box is also included. Batteries and adapter are not included. If you have any other questions, please comment.