Features:Guitar overdrive/ boost effect pedal , with 2 modes of voice to choose(Normal/ Soft).3 functional knobs(TREBLE/OUTPUT/GAIN) for adjusting the performance of the overdrive effect.True bypass footswitch for switching between overdrive effect and bypass status.LED light for indicating effects or bypass status.Full metal shell and compact size, durable and portable.Specifications:Input: 1/4 monaural JackOutput: 1/4 monaural JackPower Supply: DC 9V AC adapter (center minus plug)(not included)Item Size: 9.3 * 3.8 * 3.2cm / 3.7 * 1.5 * 1.3inItem Weight: 147g / 5.2ozPackage Size: 11.5 * 6.5 * 6cm/ 4.5 * 2.6 * 2.4inPackage Weight: 180g / 6.3ozNote:Power Adapter is not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal