Super Sonic Nausea is a unique high-pressure acoustical generating device which provides a substantial capability to disrupt and disperse gatherings. Speeches, demonstrations, crowd dynamics, etc. - this device has been used to "influence" more of these than you might expect. Deployed near the podium, you might just have a case of an increasingly un-impressive speaker with diminished sharpness and lacking concentration, or perhaps is even unable to complete his presentation. Or, loitering youths on your property might be enticed to move along with no confrontations necessary. This is the rarely-available government model that the popular commercial product Sonic Nausea was based on. It provides substantially higher sound-pressure levels, more directionality, increased projection, on-off switch, and blue LED status indicator. This latest updated version, manufactured by DSG Laboratories, meets the new 2009 specifications. Very limited quantities are currently available for commercial sale. Powered by two 9-volt batteries (not included). Size: 6.7" x 3.4" x 4.0". Use only with extreme discretion and in a lawful manner.