Compact guitar effects unit with a variety of effects and 99 patches. - Model: ZOOM 505II - Function: Effects unit - Connectors: INPUT, OUTPUT, CONTROL IN, DC IN - Number of Banks: 2 banks - Number of Patches: 99 patches - Size: Compact design I put in batteries, but it doesn't work. The previous seller commented that they confirmed it working by plugging in a cable. I am selling it because I want to use it with batteries. Please consider it as junk. Please purchase only if you agree to the above. Type...Electric Guitar Manufacturer...ZOOM