Mooer Audio The Wahter Wah Pedal Multi-Function Wah Effects Pedal WCW1 Classic Wah tone recreates vocal sweeps and lush harmonics Solid metal shell Touch-sensitive on/off operation True bypass Mini size footprint for space saving and portability Extendable pedal ring creates larger contact area and therefore enhances sensitivity 9 V power supply The Wahter recreates the vocal sweep and lush harmonics of the classic wah tone, while remaining small and compact The smoothness of tone is all thanks to the high-quality electronic components Mooer uses Unlike the traditional way of turning on/off the wah pedal, The Wahter is equipped with four pressure sensors Simply put your foot on the pedal, and the pressure sensor will sense your touch