From Electro Harmonix:

“The EHX Small Stone Phase Shifter generates thick sweeping phase shifting with liquid transparency. Feedback color control adds a tingling swirl. Blues players dig the Stones rapid rotating speaker effect. Country players add tasty seasoning to their chicken pickin. Metal-heads dig its jet plane swoosh.”

• Variable rate control allows slow and smooth to rapid edge frequency sweeps
• Color switch turns up the feedback for a more pronounced phase shifter effects
• Tough and compact die-cast chassis
• 9V battery included

Brand new condition, comes with box.