Advanced Tuning Mode: This -19 BUFFER TUNER offers immediate, accurate tuning coupled with a top-tier tuning tool, all housed in one unit boasting 1 cent accuracy. For optimal performance and minimal noise, we highly recommend using the 9V DC pedal power supply integrated with noise reduction technology. This pedal goes beyond ordinary, ensuring fast and precise tuning every time. Efficient Buffer Mode: Outfitted with an integral analog BUFFER circuit, this unit safeguards your tone during extensive cable runs and complex pedalboards. Further enhancing its versatility, it also features an buffer switch allowing seamless transition between tuner and buffer modes depending on your needs. LED Screen for Easy Reading: Sporting a large and vibrant LED screen, this pedal helps you identify the tuning notes effortlessly, regardless of lighting conditions or environments. Its colorful display enhances user experience and ensures accurate and easy-to-see settings. Compact in Size, Big on Power: This buffer tuner with its DC Output Jack - a unique feature that allows you to power another pedal as needed. Its output current matches the input current, making it a compact and practical power source for your other devices. Colour:black Material:aluminum Size:12.2x7.1x5.2cm Package Contents: 1 x Guitar effects 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.