I only tested it once and have kept it in storage since, so it's practically unused. [Product Description] Fender Genuine Footswitch MGT-4 Compatible with the Mustang GT series, allowing you to switch presets and operate the looper function. Makes live performances and studio sessions smoother. [Key Features] • 4-button design for easy preset changes • Controls the built-in looper • Enables on/off operation of effects [Included Items] • Main unit, connection cable, and original box No smoking, no pets. MUSTANG GT fender