Feature:1. Delay Effect: The guitar pedal has good delay effect, which produces sound reflection effects in the environment.2. 3 Modes: There are 3 modes to choose from, which can be switched at will to meet various needs.3. Metal Shell: Made of excellent metal material, with smooth appearance, hard and wear resistant.4. Impedance Parameter: Input impedance is 470k, and output impedance is 100, less interference and strong practicality.5. Simple Installation: With hook loop fastener and sticker, the effect pedal is easy to install and not easy to fall off.Specification:Item Type: Delay Pedal EffectMaterial: MetalColor: BlueInput Impedance: 470kOutput Impedance: 100Product Power Supply: 9V DC power adapter, negative inside and positive outside (not included)Length: Approx. 94mm / 3.7inWidth: Approx. 42mm / 1.7inHeight: Approx. 48mm / 1.9in.Package List:1 x Effect1 x User Manual1 x Hook Loop Fastener1 x StickerNote:Note that the positive and negative poles of the power supply should be the same as the positive and negative poles of the effect.