True-Bypass Switching Circuit: True bypass means that when the effect is off your guitar tone not be affected at all. The true bypass circuit makes sure you have absolutely no tone loss or signal reduction through the chorus pedal in the off/bypass mode. Three knobs + one toggle switch, wide adjustable range. RATE: This is a control for setting the speed of the internal oscillator. BLEND: This is a control for setting the mix of the modulated and the dry sound. Turn it up for a more intense effect. INTENSITY: This is a control for setting modulation depth. Turn it up for a effect. INTENCE: two modes to choose Model: CHORUS Power Supply: DC 9V, Center negative Current Consumption: 40mA at 9V DC Input Impedance: . 400K Output Impedance: . 2K Colour:Blue Material:Aluminum Alloy Package Contents: 1 x Guitar effect Pedal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.