Tone and volume control.
With phase and tuner function, built-in reverb, delay, chrous and wide effects.
3-band equalizer, rotate Low/Middle/High to adjust volume frequency.
Rotate Reverb/Delay/Chorous/Wide button to adjust its corresponding reverb, delay, chrous and wide effect.
Wide frequency range from 20 HZ to 20 kHZ.
LED for effect on/off and battery check, replace battery when BATT. light is on.
Powered by a 9V Alkaline battery.(Battery is not included)