The VC-3000 is the new version of the VCPRO, and is
professional-grade portable voice changer, and is compatible on all telephones.
Simply attach the acoustic coupler to your telephone's microphone, adjust the
16 settings by turning the selector clockwise. It has 0 being your normal
voice, the high settings will increase the pitch and low settings will decrease
the pitch. Features: Professional grade, 16 voice changing settings, Compatible on all telephones, Lightweight and compact. Specs: Professional
grade voice changer, Lightweight and compact, Powered by a 9V battery, not
included. Includes: Voice Changer, Mouth Piece Coupler and Carrying Case.