Electro-Harmonix Chromatic Tuner Pedal EHX-2020

The EHX-2020-2.0 Pedal Tuner is super compact and takes up minimal space on your crowded pedalboard. Switchable True Bypass / Buffered Bypass for easy integration into any rig, while its +/- 1 cent tuning range and high visibility display provides an accurate, convenient solution to all your tuning needs. https://www.ehx.com/products/2020-v2/