1STRONG COMPATIBILITY: The side of the pedal has a polarity switch with a 1/4 inch(6.35mm) jack input, suitable for a variety pianos or keyboards 2STURDY AND DURABLE: Sound pedal made of excellent 304 stainless steel to avoid deformation; And has a excellent ABS housing, so that the sound pedal service life is longer 3NON SLIP DESIGN: The non slip bottom grab the floor and hold the pedal perfectly in place, stable and reliable 4UNIVERSAL SOUND PEDAL: Adopt classic design, suitable for most electronic organ, digital piano and so on 5QUICK RESPONSE AND ADEQUATE LINE LENGTH: When playing a piano or keyboard, the notes respond quickly when the delay pedal is pressed. And the sound quality will be richer. The 1.5meter long wire allow you to move the pedals under the piano to the optimal position 1 x Sustain Pedal 1 x User Manual