This is a Digitech WH-4 Whammy Pitch Shifter Guitar Effects Pedal.

The unit has been tested and confirmed working.
Power on, sound output, and pedal operation have been checked and function properly.
Please refer to the test video for detailed operation.

A compatible AC adapter (non-original) is included and works properly.

Digitech is a well-known American effects brand, and the Whammy series is one of the most iconic pitch-shifting pedals used by guitarists worldwide.
The WH-4 allows expressive real-time pitch control using the treadle pedal and is widely used in rock, alternative, and experimental music.

Only the items shown in the photos are included.

Dimensions
Width: approx. 6 11/16 in (17 cm)
Depth: approx. 9 7/16 in (24 cm)
Height: approx. 2 3/8 in (6 cm)

An aftermarket AC adapter is included.

This is a Japanese domestic AC100V electrical product.
If your local voltage differs, a proper voltage transformer is required.