D'Addario PW-VG-01 Varigrip Hand Exerciser For Guitar Chord Wireless Microphone as well as a three-position

as well as a three-position switch for toggling the power mode

Trim knob:  Yes

Modulation

- Control options: DMX

These guitars are a deluxe version

D'Addario PW-VG-01 Varigrip Hand Exerciser For Guitar Chord Wireless Microphone as well as a three-positionDesigned to develop and maintain the strength and dexterity of your fingers, hands, and forearms, the D'Addario Varigrip features an ergonomic design and variable tension that is customizable for each individual finger. The reversible molded grip even uncovers simulated strings to help develop and maintain finger calluses when you are away from your instrument. D'Addario Varigrip, the ultimate conditioning tool for musicians. Note: Varigrip is an