VPT-1 Voice Pitch TrainerA dedicated pitch trainer for vocals that is easy to use and lets you see the pitch of your voice. Improve your vocal abilities by using the VPT 1 anywhere and training to your own skill level. Selectable tuning sensitivity according to user's experience level (Easy, Medium, Hard) Reference tone function for providing a starting pitch Sound Back function returns the pitch that is closet to vocal input Octave Shift function to match the displayed pitch