Features include the following:

    On/Off Switch.
    Wide Range Volume Control.
    Variable Tone Control.
    4 Magnet Roller Wheel.
    5 Position Sensitivity Control.
    Drop Back Differentiation.
    Power Out Socket.
    Extension Box Socket.
    Battery - 9 volt.
    Battery Slide.
    Digital Technology.
    Low Battery Drain.
    Low Level Battery Warning.