UPGRADE CHIP: This keyboard pedal uses 3 printed circuit boards (PCB) to control the conversion of Two-Channel polarity switch. When the polarity switch changes, PCB can identify and stabilize the internal current of piano, so as to reduce the noise and achieve the best sound quality,enrich your digital piano tone. Other pedals do not have this function | WIDE COMPATIBILITY: FZONE piano pedal sustain pedal is a upgrade Universal sustain pedal,Includes 79 inch(6.6ft) cable with 1/4 Inch jack for connection to virtually any keyboards and electric pianos，synths on market,such as:Casio,Yamaha,Korg,Roland and More.it will compatible with with your synths, keyboards and digital pianos | PREMIUM BUILD AND WORKMANSHIP: Premium build with a robust, heavy-duty mechanism for reliability, Rubberized cover for long time use, Thickened iron plate bottom, chrome plated metal foot pedal and bottom silicone pad. Bottom rough and anti-skid, a lower center of gravity | UPGRADE INTERNAL STRUCTURE: The interior of pedal is designed by steel frame mechanical structure (galvanized sheet), principle of mechanical transmission,Firm and durable. Different from other pedals which made of plastic | What's in the Box: FZONE Sustain Pedal