Guitar distortion fuzz effect pedal based on electro-harmonix Big Muff Pi. SUSTAIN knob adjusts the amount of sustain and distortion; VOLUME knob sets the output level. TONE knob provides a range of sounds from high treble to deep bass. 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. Power Supply: DC 9V AC adapter Input: 1/4 inch monaural Jack Output: 1/4 inch monaural Jack Item Weight: 147g / 5.2oz colour:black Material:metal size:9.3 * 3.8 * 3.2cm Package Contents: 1 * 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!