2 Working Modes: Vintage and Modern. It reduce noise swells common with Vintage Phase circuit, you the quietest, pure effect possible with this Phase pedal. True Byapass switch lets your instrument signal pass through a non-electronic bypass line when the effect is disengaged. Meterial: Made of high quality zinc , durable and strong. Classic mini size can save a lot of space on pedal board. LED indicator shows the working state. Note: note this pedal cannot powered by batteries. Need a DC with negative in the center to power up. Colour:blue :Zinc Size:95 x 44 x 48mm Package Contents: 1 x Guitar Effect 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.