From Boss:

“The BOSS PH-3 Phase Shifter pedal provides a wealth of vintage and modern phasing effects, including new “Rise” and “Fall” modes for unique, unidirectional phasing. Syncing these phasing effects is as simple as tapping the pedal to the desired tempo, while an optional expression pedal provides real time control of the PH-3’s Rate, Filter and Tempo.“

Brand new.