Effects: The AC Stage guitar effects pedal will take your guitar into the sound of an acoustic guitar. 3 Working : Piezo( having a bit less body and more treble), Standard ( having a basic great acoustic sound), Jumbo (having a full and deep tone). Meterial: Made of high quality zinc , durable and strong. Classic mini size can save a lot of space on pedal board. True Bypass: LED indicator shows the working state. True Byapass switch lets your instrument's signal pass through a non-electronic bypass line when the effect is disengaged. Note: note this pedal cannot powered by batteries. Need a DC with negative in the center to power up. you will enjoy the using of this Guitar Pedal. color:As shown :Zinc size:95 x 44 x 48mm Package Contents: 1 x Guitar Pedal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.