Feature:1. Dry, Wet and Range Control: The effector has dry, wet and range control to obtain a more flexible organic sound.2. 3 Modes: This is an electric guitar effect device with 3 modes, which is up, detune and down.3. Bypass Design: The effector adopts a true bypass design to keep your guitar sound clean and colorless.4. Rich and Classic Sound: Transpose guitar effector, which can bring rich and classic sound.5. Powerful Function: This is a well designed guitar effect pedal, which is powerful and durableSpecification:Item Type: Pitch Shifter Effect PedalMaterial: MetalColour: BlueInput Impedance: 470k OhmsOutput Impedance: 100 OhmsApplicable Power Supply: 9V DC Power Adapter, Negative Polarity Inside and Positive Outside (Power adapter does not include).Package List:1 x Effector1 x User Manual 1 x Hook and Loop Fastener1 x StickerNote:Note that the positive and negative poles of the power supply should be the same as the positive and negative poles of the effector