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 or Standard or JumboSignal Input: 1 or 4andPrime Monaural Jack (impedance: 1M Ohms)Signal Output: 1 or 4andPrime Monaural Jack (impedance: 100 Ohms)Power Supply: DC 9V adapter (center minus plug)Working Current: 17mAItem Size: 3.5 x 9 x 3cm or 1.4 x 3.5 x 1.2inItem Weight: 152g or 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 x Effect Pedal1 x User Manual(English andamp Chinese)Package List:1 x Effect Pedal1 x User Manual(English andamp 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.