1Retro Blue: This is a retro blue overload distortion effect device, which has overdrive gear. 2Control: This is an overload distortion effect device with volume, tones and gain control. 32 Modes: This is an electric guitar effect with bright and normal modes, can be used with confidence. 4Mini Style: The effector is small, light and delicate, and the metal case is durable and light in weight. 5Space Saving: This effect is small and space saving, so you can take with you anytime and anywhere. Item Type: OverdriveEffectPedal Material: Metal Colour: Black Input Impedance: 1M Ohms Output Impedance: 1k Ohms Applicable Power Supply: 9V DC Power Adapter, Negative Polarity Inside and Positive Outside (Power adapter does not include) 1 x Effector 1 x User Manual 1 x Hook and Loop Fastener 1 x Sticker Note that the positive and negative poles of the power supply should be the same as the positive and negative poles of the effector