Bass Guitar Module Processor, good and aweson tune and sound that will suite you test, it comes with In-built Tuner, Drums loop, modules effect, Compressor, Delay, Reverb, Wah wah, Auto Wah, Smooth Distortion, Funky Sound, Jazz Tune, Double bass tone, etc. 9v DC/AC Adaptor It also uses AA finger size battery, still new and clean. A serious buyer should contact me on 07063546312, going for cheap price