The Used Walrus Audio Julianna Deluxe Chorus & Vibrato Guitar Effects Pedal is an analog pedal designed for various types of guitars, including acoustic, electric, bass, and classical. This pedal, model 9001053, offers a versatile range of chorus and vibrato effects, allowing musicians to add depth and dimension to their sound. With the California Prop 65 Warning indicating the presence of a potentially harmful chemical, users should be aware of the potential risks associated with this product.