Features:  Easy to use with 4 rotating knobs, adjust LEVEL/ SUSTAIN/ TONE/ ATTACK.  With foot switch, easy to switch on/ off the effect pedal. True bypass is provided.  Mini size and lightweight, with ring indicator light. Perfect for electric guitar and bass.  Sturdy aluminum case, with reliable quality and great durability.  Powered by 9V effect adapter (internal negative external positive, not included).    Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.    Specifications:  Model: C-CS01/ C-CS02 (Optional)  Color: Green  Material: Aluminum + PCB  Circuit: Analog Circuit  Footswitch: True Bypass  Input Impedance: 470KΩ  Out Impedance: 1KΩ  Output Noise Level: <10mV  Current Input: <150mA  Input/ Output: 1/4″ Monaural Jack  Power Supply: DC 9V Center Negative Regular (Not included), >300mA  Item Size: 112 * 58 * 19mm / 4.41 * 2.28 * 0.75in  Item Weight: 200g / 7.05oz  Package Size: 13 * 7 * 5cm / 5.12 * 2.76 * 1.97in  Package Weight: 250g / 8.82oz    Package List:  1 * Effect Pedal  1 * User Manual