Feature:1. Acoustic guitar simulation effect pedal.2. Supports 3 modes: Piezo, Standard, Jumbo.3. With volume, resonance of guitar body, overall brilliance and harmonics adjusting knobs.4. True bypass footswitch for switching effects and bypass.5. Full metal shell, durable and sturdy.Specification:Features:Acoustic guitar simulation effect pedal.Supports 3 modes: Piezo, Standard, Jumbo.With volume, resonance of guitar body, overall brilliance and harmonics adjusting knobs.True bypass footswitch for switching effects and bypass.LED light for indicating the working status.Full metal shell, durable and sturdy.Effects Explanation:Piezo--Simulates the sound from a piezo pickup installed on an electric-acoustic guitar;Standard--Simulates a normal acoustic guitar sound;Jumbo--Simulates a bigger body acoustic guitar with more low end and resonance.Specifications:Material: MetalWorking Modes: Piezo/ Standard/ JumboSignal Input: 1/4″Monaural Jack (impedance: 1M Ohms)Signal Output: 1/4″Monaural Jack (impedance: 100 Ohms)Power Supply: DC 9V adapter (center minus plug)Working Current: 17mAItem Size: 3.5 * 9 * 3cm / 1.4 * 3.5 * 1.2inItem Weight: 152g / 5.4ozNote:The power adapter is not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal1 * User Manual(English & Chinese)Package List:1 * Effect Pedal1 * User Manual(English & Chinese) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.