Korg Pitchblack Chromatic Pedal Tuner Metallic Green 100% True-bypass output keeps your tone intact Choose from four types of display modes: Strobe, Half Strobe, Meter & Mirror Compact pedal-sized guitar/bass tuner that fits in your pedal board Large bright LED meters clearly show any tuning discrepancy A broad detection range from E0 (20.60Hz) to C8 (4,186Hz)