Pedal Features: Mini in size, fit in the hand of the adult or just put it into pocket. Light-weight and portable, easy to carry along. Allows wide range of delay time from 50ms to 400ms. True bypass design, minimize tone loss and get more control of your pedal. 3 adjustable knobs: Time, Feedback, Level Time knob: Adjust the delay time(50ms to 400ms). Feedback knob: Decide how many times the delay sound is to be repeated. Effect Level knob: Control the output level of the delay sound. Aluminum alloy housing, sturdy and durable. Durable jacks and foot switch. Comes with a piece of fastener tape to match your need better. Designed with on / off LED, instructs effects status. Powered by a 9V power adapter (not included). Specifications: Delay time: 50ms-400ms Max input level: 1.5vrms Max output level: 1.5vrms Input impedance: 100 kohm Output impedance: 150 ohm Output noise voltage: -90dBV Recommended load impedance: 10 kohm Power supply: 9V adapter (not included) Current draw: 23 mA (DC 9V) Total harmonic distortion: 50ms-0.15% Product size: 9 * 4 * 4.8cm / 3.5 * 1.6 * 1.9in Product weight: 134g / 4.7oz Package size: 12.5 * 7 * 6.8cm / 4.9 * 2.8 * 2.7in Package weight: 223g / 7.9oz