Made of high-strength hard steel, this pedal is durable, well-constructed, compact, and lightweight for easy portability. It features dual functions: passive volume control and expression pedal operation, automatically detecting and switching between volume and expression modes based on the output signal. Compatible with various tone effects such as sustain and delay, it allows real-time control of effect parameters. No battery or external power required, making it ideal for use with guitar, bass, and other musical instruments. Automatically detects and matches the output source (EXP/Vol). Equipped with a 1/4 inch mono input jack to connect to your instrument and a 1/4 inch stereo output jack for signal transmission. When used as an expression pedal, connect a stereo 1/4 inch cable from the pedal output jack while leaving the input jack disconnected. Color: Orange Material: Steel Size: 148.5 x 65.5 x 61mm Package Contents: 1 x Guitar Effect Pedal Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error allowed is +/- 1-3cm.